قُلْ هُوَ اللَّهُ أَحَدٌ... قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ... قُلْ أَعُوذُ بِرَبِّ النَّاسِ
Transliteration
Qul huwallahu ahad... Qul a'udhu birabbil-falaq... Qul a'udhu birabbin-nas
English meaning
Recite Surah Al-Ikhlas, Al-Falaq and An-Nas, blow into cupped hands and wipe over the body.
When is it recited?
Repeated 3 times every night before sleeping.
Its virtue
The Prophet (PBUH) did this every night before sleeping.
Source
Bukhari, Fada'il al-Quran 14, 5017