اَللَّهُمَّ إِنِّي أَعُوْذُ بِكَ مِنْ عَذَابِ جَهَنَّمَ وَأَعُوْذُ بِكَ مِنْ عَذَابِ الْقَبْرِ وَأَعُوْذُ بِكَ مِنْ فِتْنَةِ الْمَسِيْحِ الدَّجَّالِ وَأَعُوْذُ بِكَ مِنْ فِتْنَةِ الْمَحْيَا وَالْمَمَاتِ. اَللَّهُمَّ إِنِّي أَعُوْذُ بِكَ مِنَ الْمَأْثَمِ وَمِنَ الْمَغْرَمِ

Allaahumma inni a`udhu bika min `adhaabi jahannam, wa a`udhu bika min `adhaabil-qabr, wa a`udhu bika min fitnatil-masihid-dajjaal, wa a`udhu bika min fitnatil-mahyaa wal-mamaat, Allaahumma inni a`udhu bika minal-ma'thami wa minal-maghram

O Allah, I seek refuge with Thee from the torment of Hell, and I seek refuge with Thee from the torment of the grave, and I seek refuge with Thee from the trial of the Masih al-Dajjal (Antichrist) and I seek refuge with Thee from the trial of life and death. O Allah! I seek refuge with Thee from sin and debt. Ibn ‘Abbas (RA) said that the Holy Prophet (ﷺ) used to teach them (the Companions) this Dua in the same way he used to teach them Surah of the Quran. He used to say: (The dua is mentioned above)

Reference: Muslim: 1/412