أَسْتَغْفِرُ اللّهَ وَأَتُوبُ إلَيْهِ.
Source: Source: duas.org · ramadan-laylat-ul-qadr-amaal-dua-common
astaghfiru allaha wa atubu ilayhi
I seek the forgiveness of Allah and I repent before Him.
Reference / Source
Source: duas.org · ramadan-laylat-ul-qadr-amaal-dua-common
