Rabbighfir li wa tub ‘alayya innaka antat-Tawwabur-Rahim.
My Lord, forgive me and accept my repentance. Indeed, You are the Accepter of repentance, the Most Merciful. See also Sayyid al-Istighfar, the best way to seek forgiveness.
Reference: Abu Dawud 1516, at-Tirmidhi 3434 (sahih)
