The Prophet (peace be upon him) commanded that we seek refuge in Allah from four things, saying to make this seeking-of-refuge after the final tashahhud: 'Allahumma inni a'udhu bika min adhabi jahannam, wa min adhabi al-qabr, wa min fitnati al-mahya wa al-mamat, wa min sharri fitnati al-masih al-dajjal' — from the punishment of Hell, the punishment of the grave, the trials of life and death, and the evil of the trial of the False Messiah (Dajjal). He used to teach this as he taught a surah of the Qur'an, showing its importance. Seeking refuge (isti'adha) is itself a form of dua and worship directed to Allah alone. It is recommended to say it in every prayer before the final salam.
Evidence — the daleel
Sahih Muslim 588 ṢaḥīḥSahih al-Bukhari 1377 Ṣaḥīḥ
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Informational, not a personal fatwa. Consult a qualified scholar for rulings on your situation.