Luke 22:40

22:40 When he came to the place, ¹  he said to them, “Pray that you will not fall into temptation.” ² 

¹ sn Luke does not mention Gethsemane by name, but calls it simply the place.

² sn Jesus’ instructions to pray not to fall into temptation is an allusion to Luke 22:28-38, especially 22:31. The temptation is Satan’s challenge to them to defect, like what happened to Judas and what will happen to Peter.