The Prophet ﷺ would say this dua:
اَللَّهُمَّ طَهِّرْنِيْ مِنَ الذُّنُوبِ وَالْخَطَايَا اَللَّهُمَّ نَقِّنِيْ مِنْهَا كَمَا يُنَقَّى الثَّوْبُ الْأَبْيَضُ مِنَ الدَّنَسِ، اَللَّهُمَّ طَهِّرْنِيْ بِالثَّلْجِ وَالْبَرَدِ وَالْمَاءِ الْبَارِدِ
Transliteration
Allaahumma tahhirni minadh-dhunubi wal-khataayaa. Allaahumma naqqini minhaa kamaa yunaqqath thawbul-abyadu minad-danasi, Allaahumma tahhirni bith-thalji wal-barad wal-maa'i al-baarid
Translation
Abdullah bin Abi Awfa narrated that the Prophet (ﷺ) would supplicate: \
أَخْبَرَنَا مُحَمَّدُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا بِشْرُ بْنُ الْمُفَضَّلِ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ مَجْزَأَةَ بْنِ زَاهِرٍ، أَنَّهُ سَمِعَ عَبْدَ اللَّهِ بْنَ أَبِي أَوْفَى، يُحَدِّثُ عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ كَانَ يَدْعُو " اللَّهُمَّ طَهِّرْنِي مِنَ الذُّنُوبِ وَالْخَطَايَا اللَّهُمَّ نَقِّنِي مِنْهَا كَمَا يُنَقَّى الثَّوْبُ الأَبْيَضُ مِنَ الدَّنَسِ اللَّهُمَّ طَهِّرْنِي بِالثَّلْجِ وَالْبَرَدِ وَالْمَاءِ الْبَارِدِ " . '
Translation
Abdullah bin Abi Awfa narrated that the Prophet (ﷺ) would supplicate: "Allahumma tahhirni min adh-dhunub wal-khataya. Allahumma naqqini minha kama yunaqqa ath-thawb al-abyad min ad-danas, Allahumma tahhirni bith-thalji wal-barad wal-ma' al-barid (O Allah, purify me of sin and error, O Allah cleanse me of it as a white garment is cleansed of dirt, O Allah purify me with snow and hail and cold water)." [Sahih (Albani). An-Nasai: 402]
Masnoon prayer (Astaghfirullah)
Masnoon Prayer for forgiveness (Rbbighfirli Wa tub Alayya)
Stay Safe from Sickness and Hellfire - Protective Dua
Seeking Allah's Mercy (From Surah Hud)
Dua to Forgive All Muslims (From Surah Hashr)
Ask Allah to Help You Pray and Forgive Your Family (From Surah Ibrahim)