Hadith: Whoever memorizes ten of the first verses of Sūrat al-Kahf will be guarded against the Anti-Christ

عن أبي الدرداء –رضي الله عنه- عن النبي صلى الله عليه وسلم : «مَنْ حَفِظَ عَشْرَ آيَاتٍ مِنْ أَوَّلِ سُورَةِ الكَهْفِ، عُصِمَ مِنَ الدَّجَّالِ». وفي رواية: «مِنْ آخِرِ سُورَةِ الكَهْف».
[صحيح] - [رواه مسلم]

Abu Ad-Dardā’ (may Allah be pleased with him) reported: The Prophet (may Allah's peace and blessings be upon him) said: "Whoever memorizes ten of the first verses of Sūrat al-Kahf will be guarded against the Anti-Christ." In another version: "c2">“From the concluding verses of Sūrat al-Kahf.”
Sahih/Authentic. - [Muslim]

Explanation

If a person learns by heart ten verses from the first or concluding verses of Sūrat al-Kahf, according to these narrations, Allah, the Almighty, will protect him against the evil and trial of the Anti-Christ. He will not be able to overpower or harm him, by the permission of the Almighty Lord.