Remembrance said at a sitting or gathering…etc

رَبِّ اغْفِرْ لِي وَتُبْ عَلَيَّ، إِنَّكَ أَنْتَ التَّوَّابُ الْغَفُورُ ⁽¹⁾.

Ibn AAumar (Peace Be Upon Him) said: It would be counted that the Messenger of Allah (Peace Be Upon Him) would say one hundred times at any one sitting before getting up: Rabbigh-fir lee watub AAalay, innaka antat-tawwabul-ghafoor.
‘O my Lord, forgive me and turn towards me (to accept my repentance). Verily You are The Oft-Returning. The Oft-Forgiving.