بِسْمِ اللَّهِ وَضَعْتُ جَنْبِى اَللَّهُمَّ اغْفِرْ لِي ذَنْبِيْ وَأَخْسِئْ شَيْطَانِيْ وَفُكَّ رِهَانِيْ وَاجْعَلْنِيْ فِي النَّدِىِّ الْأَعْلَى

Bismillaahi wada‘tu janbi, Allahum-maghfir li dhanbi wa akhsi’ shaytaani wa fukka rihaani waj‘alni fi’n-nadiyyi al-a‘laa

In the name of Allah, I have laid down my side for Allah. O Allah! forgive my sin, drive away my devil, free me from my responsibility, and place me in the highest assembly. Abul Azhar Anmari (RA) said that the Prophet (ﷺ) used to say these words when he was lying in bed at night.

Reference: Sahih (Albani). Sunan Abu Dawud: 5054