بِسْمِ اللَّهِ، تَوَكَّلْتُ عَلَى اللَّهِ، وَلَا حَوْلَ وَلَا قُوَّةَ إِلاَّ بِاللَّهِ

In the Name of Allah, I have placed my trust in Allah, there is no might and no power except by Allah.

Bismillaahi, tawakkaltu 'alallaahi, wa laa hawla wa laa quwwata illaa billaah.

Abu Dawud 4/325, At-Tirmithi 5/490. See also Al-Albani, Sahih At-Tirmithi 3/151