بِسْمِ اللَّهِ تَوَكَّلْتُ عَلَى اللَّهِ وَلَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللَّهِ
Transliteration
Bismillahi tawakkaltu 'alallahi wa la hawla wa la quwwata illa billah
English meaning
In the name of Allah, I place my trust in Allah, and there is no might nor power except with Allah.
When is it recited?
Recited every time one leaves the home.
Its virtue
Whoever says this is told: 'You are guided, sufficed and protected, and Satan moves away from you.'
Source
Abu Dawud, Adab 103, 5095; Tirmidhi, Da'awat 34, 3426