Narrated Abdullah bin Umar (RA): We used to count and see that the Messenger of Allah (ﷺ) used to say a hundred times after the meeting:
رَبِّ اغْفِرْ لِي وَتُبْ عَلَىَّ إِنَّكَ أَنْتَ التَّوَّابُ الرَّحِيمُ
Pronunciation
Rabbighfir lee watub 'alayya 'innaka 'Antat-Tawwaabur-rahim
Meaning
My Lord, forgive me and accept my repentance, You are the Ever-Relenting, the All-Forgiving.
Source: Sahih. Abu Dawud: 1516
Read the hadith
حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا أَبُو أُسَامَةَ، عَنْ مَالِكِ بْنِ مِغْوَلٍ، عَنْ مُحَمَّدِ بْنِ سُوقَةَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ إِنْ كُنَّا لَنَعُدُّ لِرَسُولِ اللَّهِ صلى الله عليه وسلم فِي الْمَجْلِسِ الْوَاحِدِ مِائَةَ مَرَّةٍ " رَبِّ اغْفِرْ لِي وَتُبْ عَلَىَّ إِنَّكَ أَنْتَ التَّوَّابُ الرَّحِيمُ " .
Narrated Abdullah ibn Umar: We counted that the Messenger of Allah (ﷺ) would say a hundred times during a meeting: "My Lord, forgive me and pardon me; Thou art the Pardoning and forgiving One". [Sahih (Albani). Abu Dawud: 1516]
Duas from IslamicAPI's Masnun Dua dataset (based on the Quran, hadith, Hisnul Muslim and Rahe Belayat). See the dataset