Abud-Darda' (May Allah be pleased with him) reported:
The Messenger of Allah (ﷺ) said: "Whoever commits to memory the first ten Ayat of the Surat Al-Kahf, will be protected from (the trial of) Ad-Dajjal (Antichrist)."[Muslim].In another narration, the Messenger of Allah (ﷺ) said: "(Whoever commits to memory) the last ten Ayat of Surat Al-Kahf, he will be protected from (the trial of) Ad-Dajjal (Antichrist)." (ES)
App reference (ES): Book 9, Hadith 31 (ES)
Arabic/English book reference (ES): Book 9, Hadith 1021 (ES)