Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tirmidhi:2886 – Muḥammad b. Bashhār > Muḥammad b. Jaʿfar > Shuʿbah > Qatādah > Sālim b. Abū al-Jaʿd > Maʿdān b. Abū Ṭalḥah > Abū al-Dardāʾ

that the Prophet ﷺ said: "Whoever recites three Ayat from the beginning of Al-Kahf he is protected from the turmoil of the Dajjal."  

Abū ʿĪsá said that this Ḥadīth is Ḥasan-Ṣaḥīḥ.
الترمذي:٢٨٨٦ – حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ قَالَ حَدَّثَنَا شُعْبَةُ عَنْ قَتَادَةَ عَنْ سَالِمِ بْنِ أَبِي الْجَعْدِ عَنْ مَعْدَانَ بْنِ أَبِي طَلْحَةَ عَنْ أَبِي الدَّرْدَاءِ

عَنِ النَّبِيِّ ﷺ قَالَ مَنْ قَرَأَ ثَلاَثَ آيَاتٍ مِنْ أَوَّلِ الْكَهْفِ عُصِمَ مِنْ فِتْنَةِ الدَّجَّالِ حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ قَالَ حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ قَالَ حَدَّثَنِي أَبِي عَنْ قَتَادَةَ بِهَذَا الإِسْنَادِ نَحْوَهُ  

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ