177. Best Dua To Enter Mosque Rabbighfirli Dhunubi
Whenever the Messenger of Allah (ﷺ) entered the mosque he would say Durood. Then Say:
اَللَّهُمَّ اغْفِرْ لِي ذُنُوْبِي وَافْتَحْ لِي أَبْوَابَ رَحْمَتِكَ
اَللّٰهُمَّ اغْفِرْ لِىْ ذُنُوْبِىْ وَافْتَحْ لِىْ اَبْوَابَ رَحْمَتِكَ
Rabbig-firli dhunubi waftah li abwaaba rahmatik
Translation
O Allah, forgive me my sins and open to me the gates of Your mercy.