It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that when the Prophet (peace and blessings be upon him) would lie down on his bed, he would supplicate: «قِنِي عَذَابَكَ يَوْمَ تَجْمَعُ عِبَادَكَ» "O Lord! Save me from the punishment of the Day when You will gather Your servants."