Chapter: After the last tashahhud and before salam

Status Reference : Hisn al-Muslim 55

اللّهُـمَّ إِنِّـي أَعـوذُ بِكَ مِـنْ عَذابِ القَـبْر،
وَمِـنْ عَذابِ جَهَـنَّم،
وَمِـنْ فِتْـنَةِ المَحْـيا وَالمَمـات،
وَمِـنْ شَـرِّ فِتْـنَةِ المَسيحِ الدَّجّال

English Translation:

Allāhumma ‘innī ‘a`ūdhu bika min `adhābi ‘l-qabri,
wa min `adhābi jahannam,
wa min fitnati ‘l-maḥyā wa ‘l-mamāti,
wa min sharri fitnati ‘l-masīḥid-dajjāl.

O Allah, I seek refuge in You from the punishment of the grave, and from the punishment of Hell-fire, and from the trials of life and death, and
from the evil of the trial of the False Messiah.

Reference:
Al-Bukhari 2/102, Muslim 1/412, and this is Muslim’s wording.