Supplications before ending the prayer
اَللّٰهُـمَّ إِنِّيْٓ أَعُـوْذُ بِكَ مِـنْ عَذَابِ الْقَـبْرِ، وَمِـنْ عَذَابِ جَهَـنَّمِ، وَمِـنْ فِتْـنَةِ الْمَحْـيَا وَالمَمَـاتِ، وَمِـنْ شَـرِّ فِتْـنَةِ الْمَسِيْحِ الدَّجَّالِ
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.
References
[Sahih Muslim - 588]