اللَّهُمَّ بِاسْمِكَ أَمُوتُ وَأَحْيَا
Also: Lie down flat and raise your hands like you are making dua and recite :
3 Times
قُلۡ هُوَ ٱللَّهُ أَحَدٌ ٠ ٱللَّهُ ٱلصَّمَدُ ٠ لَمۡ يَلِدۡ وَلَمۡ يُولَدۡ ٠ وَلَمۡ يَكُن لَّهُ ۥ ڪُفُوًا أَحَدٌ ٠
– Surah 112
1 Time
قُلۡ أَعُوذُ بِرَبِّ ٱلۡفَلَقِ ٠ مِن شَرِّ مَا خَلَقَ ٠ وَمِن شَرِّ غَاسِقٍ إِذَا وَقَبَ ٠ وَمِن شَرِّ ٱلنَّفَّـٰثَـٰتِ فِى ٱلۡعُقَدِ ٠ وَمِن شَرِّ حَاسِدٍ إِذَا حَسَدَ ٠
– Surah 113
1 Time
قُلۡ أَعُوذُ بِرَبِّ ٱلنَّاسِ ٠ مَلِكِ ٱلنَّاسِ ٠ إِلَـٰهِ ٱلنَّاسِ ٠ مِن شَرِّ ٱلۡوَسۡوَاسِ ٱلۡخَنَّاسِ ٠ ٱلَّذِى يُوَسۡوِسُ فِى صُدُورِ ٱلنَّاسِ ٠ مِنَ ٱلۡجِنَّةِ وَٱلنَّاسِ ٠
– Surah 114
And then blow it on your palms and reach out the palms on your body as far as you can from forehead to downwards. The follower of this Sunnah will never be disturbed by any Shaitan while asleep and in fact an angel stands by him to protect him from all evils throughout the night.
Remember, Always sleep on your right side.
Do Wuzu before Sleeping. Always be with wuzu as one may die anywhere anytime, but if a person dies while he was with wuzu, he will be awarded the status of a Shaheed (martyr) by Allah Subhanahu Wa Ta’ala