Writing to OLED SPI screen and using NRF24L01

So I am trying to recieve data from a nrf24L01 and then display it on monochrome OLED display. The struggle is I am unable to run both things in the same arduino. it seems like its an easy thing to do but I just cant find the answer anywhere.

When I comment out the initialization of the nrf24L01, then my screen is able to update, but when I have the code for the nrf24L01 then the oled screen displays what I had displayed without the nrf24L01 code.

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <Wire.h>
#include “U8glib.h”

U8GLIB_SH1106_128X64 u8g(13, 11, 10, 9); // SCK = 13, MOSI = 11, CS = 10, A0 = 9

RF24 radio(8,9); //CE, CSN
const byte node1[6] = “00001”;
//int32_t spo2;
int32_t red[2];

void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
// radio.begin(); I am able to draw on the oled when i have commented
// radio.openReadingPipe(0,node1); this section out otherwise it doesnt work!!
// radio.setPALevel(RF24_PA_MIN);
// radio.startListening();
setupscreen();
}

void loop() {
// put your main code here, to run repeatedly:
float t=micros();
// if(radio.available()){
// radio.read(&red,sizeof(red));
// Serial.print(red[0],DEC);
// Serial.print(’ ');
// Serial.println(red[1],DEC);
// }

u8g.firstPage();
do {
draw();

} while( u8g.nextPage() );

while((micros()-t)<10000){}

}

void draw() {
// graphic commands to redraw the complete screen should be placed here
//u8g.setFont(u8g_font_osb21);
u8g.drawStr( 20, 30, “Rd:”);
u8g.drawStr( 20, 50, "IR: ");
u8g.setPrintPos(60,30);
u8g.print(red[0]);
u8g.setPrintPos(60,50);
u8g.print(red[1]);
}

void setupscreen()
{
// flip screen, if required
u8g.setRot180();
u8g.setFont(u8g_font_unifont);
}

First: Edit your post and insert code tags!

Most probably you're running out of memory. The 128x64 OLED uses more than half of the available RAM for the screen buffer so you have to be very careful what other memory you use. Otherwise you have to change to a board with more RAM.