Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "Whoever recites Surat al-Kahf, on the Day of Resurrection this surah will be a light for him from the place where he stands to Makkah. And whoever recites its last ten verses, then even if the Dajjal emerges, he will not be able to harm that person."
Al-Tabarani recorded it in al-Mu'jam al-Awsat as part of a long hadith; this complete narration is mentioned in the Book of Purification. Its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 11145