اللَّهُمَّ اغْفِرْ لِي ذَنْبِي كُلَّهُ ، دِقَّهُ وَجِلَّهُ ، وَأَوَّلَهُ وَآخِرَهُ ، وَعَلانِيَتَهُ وَسِرَّهُ
Translation 
O Allah, forgive me all of my sins, the small and great of them, the first and last of them, and the seen and hidden of them.
Transliteration
allaahumm-agh-fir lee dhambee kullahu, diqqahu wa jillahu, wa awwalahu wa aakhirahu, wa ‛alaaniyatahu wa sirrah
Sources:
Muslim No# 483; Abu Dawud No# 878
