What to say before sleeping

اللَّهُمَّ إِنَّكَ خَلَقْتَ نَفْسِي وَأَنْتَ تَوَفَّاهَا، لَكَ مَمَاتُهَا وَمَحْياهَا، إِنْ أَحْيَيْتَهَا فَاحْفَظْهَا، وَإِنْ أَمَتَّهَا فَاغْفِرْ لَهَا. اللَّهُمَّ إِنِّي أَسْأَلُكَ العَافِيَةَ

Allāhumma innaka khalaqta nafsī wa anta tawaffāhā, laka mamātuhā wa maḥyhā, in aḥyaytahā fa iḥfaẓhā, waʾin amattahā fa ighfir lahā. allāhumma innī asʾaluka l-ʿāfiyah

O Allah, verily You have created my soul and You shall take it’s life, to You belongs it’s life and death. If You should keep my soul alive then protect it, and if You should take it’s life then forgive it. O Allah, I ask You to grant me good health.