There is no power and no strength except with Allah, the Most High, the Most Gre — Strength
لَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللَّهِ الْعَلِيِّ الْعَظِيمِ
Transliteration: Laa hawla wa laa quwwata illaa billaahil-'aliyyil-'adheem
Translation: There is no power and no strength except with Allah, the Most High, the Most Great.
Reference: Bukhari, Muslim