ENOfficial
Abūd Dardā’ reported God’s messenger as saying, “He who recites three verses at the beginning of al-Kahf will be protected from the trial of the dajjāl.” Tirmidhī transmitted it, saying this is a hasan sahīh tradition.
Source: sunnah.com
Other translations
Arabic
وَعَن أبي الدَّرْدَاء قَالَ ك قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ قَرَأَ ثَلَاثَ آيَاتٍ مِنْ أَوَّلِ الْكَهْفِ عُصِمَ مِنْ فِتْنَةِ الدَّجَّالِ» . رَوَاهُ التِّرْمِذِيُّ وَقَالَ: هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ
sunnah.com