اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ عَذَابِ جَهَنَّمَ، وَمِنْ عَذَابِ الْقَبْرِ، وَمِنْ فِتْنَةِ الْمَحْيَا وَالْمَمَاتِ، وَمِنْ شَرِّ فِتْنَةِ الْمَسِيحِ الدَّجَّالِ
Allahumma inni a'udhu bika min 'adhabi jahannam, wa min 'adhabil-qabr, wa min fitnatil-mahya wal-mamat, wa min sharri fitnatil-masihid-dajjal
O Allah, I seek refuge in You from the punishment of Hell, from the punishment of the grave, from the trials of life and death, and from the evil of the trial of the False Messiah.
Recited before the final salam in prayer
The Prophet (PBUH) commanded seeking refuge from these four things in every prayer.