Astaghfirullahal-ʿadhim

أَسْتَغْفِرُ اللَّهَ الْعَظِيمَ الَّذِي لَا إِلَٰهَ إِلَّا هُوَ الْحَيُّ الْقَيُّومُ وَأَتُوبُ إِلَيْهِ

Translittération

Astaghfirullaahal-ʿadheem, al-lathee laa ilaaha illa huwal-hayyul-qayyoom, wa atoobu ilayyh.

I seek the forgiveness of Allah the Mighty, Whom there is no god (worthy of worship) but Him, The Living, The All-Sustaining, and I repent unto Him.