رَبِّ اغْفِـرْ لي، وَتُبْ عَلَـيَّ، إِنَّكَ أَنْـتَ التَّـوّابُ الغَـفُورُ
Rabbighfir lee wa tub ‘alayya ‘innaka ‘Antat-Tawwaabul-Ghafoor
My Lord, forgive me and accept my repentance, You are the Ever-Relenting, the All-Forgiving.
At-Tirmidhi: 3434 and Abu Dawud: 1516