اللَّهُمَّ قِنِي عَذَابَكَ يَوْمَ تَبْعَثُ عِبَادَكَ
The Prophet (peace and blessings of Allah be upon him) would place his right hand under his cheek when about to sleep and supplicate:
O Allah, protect me from Your punishment on the day Your slaves are resurrected.
O Allah, protect me from Your punishment on the day Your slaves are resurrected.