Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad-zuhd:596 – ʿAbdullāh > Yaʿqūb > Rawḥ > Abū Khaldah > Abū al-ʿĀliyah > Akthar

[Machine] I hear Umar ibn Al-Khattab saying, "O Allah, protect us and forgive us."  

الزهد لأحمد:٥٩٦ – حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنَا يَعْقُوبُ حَدَّثَنَا رَوْحٌ أَنْبَأَنَا أَبُو خَلْدَةَ قَالَ سَمِعْتُ أَبَا الْعَالِيَةِ قَالَ أَكْثَرُ مَا كُنْتُ

أَسْمَعُ عُمَرَ بْنَ الْخَطَّابِ ؓ يَقُولُ «اللَّهُمَّ عَافِنَا وَاعْفُ عَنَّا»  

See similar narrations below:

Collected by Aḥmad's Zuhd, Suyūṭī
ahmad-zuhd:618 – ʿAbdullāh > Bī > ʿAbd al-Ṣamad > Abū Khaldah > Abū al-ʿĀliyah

[Machine] I hear from Umar ibn Al-Khattab, "O Allah, grant us security and forgive us."  

الزهد لأحمد:٦١٨ – حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنِي أبِي حَدَّثَنَا عَبْدُ الصَّمَدِ حَدَّثَنَا أَبُو خَلْدَةَ حَدَّثَنَا أَبُو الْعَالِيَةِ قَالَ أَكْثَرُ مَا كُنْتُ

أَسْمَعُ مِنْ عُمَرَ بْنِ الْخَطَّابِ «اللَّهُمَّ عَافِنَا وَاعْفُ عَنَّا»