@123cheatn I'm trying very similar project but could not achieve it
On master Arduino, RFID UID ID will be read and send to 4 other Arduinos; they will react regarding to UID ID (activate a relay, led etc.). Also those 4 Arduinos have MFRC522 but won't be sending RF UID ID's, just reacting depending on which UID ID read by their reader.
I think I could not solve multiple SPI module code Here is my code;

#include <SPI.h>
#include <MFRC522.h>
#include <RF24.h>
#include <NRF24.h>
#include <nRF24L01.h>
NRF24 radio;

unsigned long time_now = 0;
int blinkled = 300;
int value;
int displace = 1000;
unsigned long CountDownStarted = 0;

int CountdownState = 0;

int Set60State = 0;
int Set90State = 0;
int EngineState = 0;

#define EnginePin 6
#define StartPin 7
#define Set90Pin 8
#define Set60Pin 9
#define TestLed 13

String cardUID ;
#define SS_RF 10
#define RST 5
#define SS_NRF 53
MFRC522 mfrc522(SS_RF, RST);   // Create MFRC522 instance.


void setup()
{ pinMode(EnginePin, OUTPUT);
  pinMode(StartPin, OUTPUT);
  pinMode(Set90Pin, OUTPUT);
  pinMode(Set60Pin, OUTPUT);
  Serial.begin(115200);   // Initiate a serial communication
  SPI.begin();      // Initiate  SPI bus

  radio.setAddress(0xD2);
  radio.begin(40, 53);
  radio.setChannel(124);
  radio.setRetries(0, 15);
  radio.setActive(true);
  pinMode(SS_RF, OUTPUT);
  pinMode(SS_NRF, OUTPUT);
  pinMode(TestLed, OUTPUT);
  digitalWrite(EnginePin, LOW);
  digitalWrite(StartPin, LOW);
  digitalWrite(Set90Pin, LOW);
  digitalWrite(Set60Pin, LOW);
  digitalWrite(TestLed, LOW);
}
void loop()
{
  radio.startListening();

  if (CountdownState == 1) {
    CountDown();
  }


  // Look for new cards
  if ( ! mfrc522.PICC_IsNewCardPresent())
  {
    return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial())
  {
    return;
  }

  //Show UID on serial monitor
  Serial.print("UID tag :");
  String content = "";
  byte letter;
  for (byte i = 0; i < mfrc522.uid.size; i++)
  {
    Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
    Serial.print(mfrc522.uid.uidByte[i], HEX);
    content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
    content.concat(String(mfrc522.uid.uidByte[i], HEX));
  }
  Serial.println();
  Serial.print("Message : ");
  content.toUpperCase();


  if (content.substring(1) == "E0 0A DD A4" || content.substring(1) == "C0 57 FE A7" || content.substring(1) == "B0 AB 9F A5" || content.substring(1) == "50 51 1B A4" )
  {
    if (EngineState == 0) {
      
      digitalWrite(EnginePin, HIGH);
      Serial.print(F("Sending Engine Code... "));
      bool sent = radio.send(0xD3, "E0 0A DD A4");
      bool sent2 = radio.send(0xD4, "E0 0A DD A4");
      bool sent3 = radio.send(0xD5, "E0 0A DD A4");
      bool sent4 = radio.send(0xD6, "E0 0A DD A4");
      Serial.println(sent ? "OK" : "failed");
      Serial.println(sent2 ? "OK" : "failed");
      Serial.println(sent3 ? "OK" : "failed");
      Serial.println(sent4 ? "OK" : "failed");
      EngineState = 1;
      delay(50);
    }

    if (EngineState == 1) {
      bool sent = radio.send(0xD3, "E0 0A DD A4");
      bool sent2 = radio.send(0xD4, "E0 0A DD A4");
      bool sent3 = radio.send(0xD5, "E0 0A DD A4");
      bool sent4 = radio.send(0xD6, "E0 0A DD A4");

      Serial.println(sent ? "OK" : "failed");
      Serial.println(sent2 ? "OK" : "failed");
      Serial.println(sent3 ? "OK" : "failed");
      Serial.println(sent4 ? "OK" : "failed");
      delay(100);
    }
  }

  if ((EngineState != 0) && (content.substring(1) == "CD 9E 08 75" || content.substring(1) == "7D A6 4F 75" || content.substring(1) == "8D 2B 55 75" || content.substring(1) == "DD D1 6C 3E" ))
  {
    if (CountdownState == 0) {
      Serial.println("Countdown Started");
      digitalWrite(StartPin, HIGH);
      delay(50);
      digitalWrite(StartPin, LOW);
      Serial.print(F("Sending Start Code... "));
      bool sent = radio.send(0xD3, "CD 9E 08 75");
      bool sent2 = radio.send(0xD4, "CD 9E 08 75");
      bool sent3 = radio.send(0xD5, "CD 9E 08 75");
      bool sent4 = radio.send(0xD6, "CD 9E 08 75");

      Serial.println(sent ? "OK" : "failed");
      Serial.println(sent2 ? "OK" : "failed");
      Serial.println(sent3 ? "OK" : "failed");
      Serial.println(sent4 ? "OK" : "failed");
      CountdownState = 1;
    }

    if (CountdownState == 1) {
      Serial.print(F("Sending Start Code... "));
      bool sent = radio.send(0xD3, "CD 9E 08 75");
      bool sent2 = radio.send(0xD4, "CD 9E 08 75");
      bool sent3 = radio.send(0xD5, "CD 9E 08 75");
      bool sent4 = radio.send(0xD6, "CD 9E 08 75");

      Serial.println(sent ? "OK" : "failed");
      Serial.println(sent2 ? "OK" : "failed");
      Serial.println(sent3 ? "OK" : "failed");
      Serial.println(sent4 ? "OK" : "failed");
      delay(100);
    }

  }

 

  if ((EngineState != 0) && (content.substring(1) == "7D 1C 65 5C" || content.substring(1) == "AD C2 5C 74"))
  {
    if (Set90State == 0) {
      
      digitalWrite(Set90Pin, HIGH);
      delay(50);
      digitalWrite(Set90Pin, LOW);
      Serial.print(F("Sending 90' Code... "));
      bool sent = radio.send(0xD3, "7D 1C 65 5C");
      bool sent2 = radio.send(0xD4, "7D 1C 65 5C");
      bool sent3 = radio.send(0xD5, "7D 1C 65 5C");
      bool sent4 = radio.send(0xD6, "7D 1C 65 5C");
      Serial.println(sent ? "OK" : "failed");
      Serial.println(sent2 ? "OK" : "failed");
      Serial.println(sent3 ? "OK" : "failed");
      Serial.println(sent4 ? "OK" : "failed");
      Set90State = 1;
      delay(50);

    }
    else
    {
      
      bool sent = radio.send(0xD3, "7D 1C 65 5C");
      bool sent2 = radio.send(0xD4, "7D 1C 65 5C");
      bool sent3 = radio.send(0xD5, "7D 1C 65 5C");
      bool sent4 = radio.send(0xD6, "7D 1C 65 5C");
      Serial.println(sent ? "OK" : "failed");
      Serial.println(sent2 ? "OK" : "failed");
      Serial.println(sent3 ? "OK" : "failed");
      Serial.println(sent4 ? "OK" : "failed");
      delay(100);
    }
  }



  if ((EngineState != 0) && (content.substring(1) == "20 C4 18 A4" || content.substring(1) == "1D AE 2C 75"))
  {
    if (Set60State == 0) {
      
      digitalWrite(Set60Pin, HIGH);
      delay(50);
      digitalWrite(Set60Pin, LOW);
     
      bool sent = radio.send(0xD3, "20 C4 18 A4");
      bool sent2 = radio.send(0xD4, "20 C4 18 A4");
      bool sent3 = radio.send(0xD5, "20 C4 18 A4");
      bool sent4 = radio.send(0xD6, "20 C4 18 A4");
      Serial.println(sent ? "OK" : "failed");
      Serial.println(sent2 ? "OK" : "failed");
      Serial.println(sent3 ? "OK" : "failed");
      Serial.println(sent4 ? "OK" : "failed");
      Set60State = 1;
      delay(50);

    }
    else
    {
      
      bool sent = radio.send(0xD3, "20 C4 18 A4");
      bool sent2 = radio.send(0xD4, "20 C4 18 A4");
      bool sent3 = radio.send(0xD5, "20 C4 18 A4");
      bool sent4 = radio.send(0xD6, "20 C4 18 A4");
      Serial.println(sent ? "OK" : "failed");
      Serial.println(sent2 ? "OK" : "failed");
      Serial.println(sent3 ? "OK" : "failed");
      Serial.println(sent4 ? "OK" : "failed");
      delay(100);
    }
  }


  if (radio.available()) {
    char buf[32];
    uint8_t numBytes = radio.read(buf, sizeof(buf));
    Serial.print(F("Received: "));
    Serial.println(buf);
  }


}


void CountDown() {
  time_now = millis();
  value = 128 + 127 * cos(2 * PI / blinkled * time_now);
  analogWrite(TestLed, value);
  //Serial.println(value);
}

Do you have any idea to solve this?