379. Masnun Istegfar #3
Narrated Abdullah ibn Umar (RA): We counted that the Messenger of Allah (ﷺ) would say this dua a hundred times during a meeting -
رَبِّ اغْفِرْ لِي وَتُبْ عَلَيَّ إِنَّكَ أَنْتَ التَّوَّابُ الرَّحِيمُ (الْغَفُوْرُ)
Rabbighfirli Watub Alayya Innaka Antat-Tawwabul- rahim [in another narration there is al-Ghaffur instead of al-Rahim]
Lord, forgive me and repent for me, for you are The Most Merciful The Acceptor of Repentance. In another narration there is "The Forgiver" instead of "The Acceptor of Repentance"
Related Duas:
Sayyidul Istighfar (Best way to ask forgiveness)
Seeking forgiveness #2
Seeking forgiveness #1
Seeking fogiveness for previous righteous generation and free hatred from heart for them
Seeking forgiveness for sins committed in secret and in public
Masnun Istegfar #7
Dua for Allah's response and forgiveness
Repentance is mentioned in the Qur'an #2
To seek forgiveness for sins committed intentionally or unintentionally
Seeking forgiveness by Allah's greatest name #2
To be cleansed from sin and error
Repentance is mentioned in the hadith #1