Hadith: Whoever memorizes the first ten verses of Surat al-Kahf will be protected from the Antichrist." Another version reads: "the last ten verses of Surat al-Kahf

عن أبي الدرداء رضي الله عنه أن النبي صلى الله عليه وسلم قال:
«مَنْ حَفِظَ عَشْرَ آيَاتٍ مِنْ أَوَّلِ سُورَةِ الكَهْفِ، عُصِمَ مِنَ الدَّجَّالِ». وفي رواية: «مِنْ آخِرِ سُورَةِ الكَهْف».
[صحيح] - [رواه مسلم] - [صحيح مسلم: 809]

Abu Ad-Dardā’ (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said:
"Whoever memorizes the first ten verses of Surat al-Kahf will be protected from the Antichrist." Another version reads: "the last ten verses of Surat al-Kahf."
[Authentic hadith] - [Narrated by Muslim] - [Sahih Muslim - 809]

Explanation

The Prophet (may Allah's peace and blessings be upon him) informed that whoever memorizes ten verses from the beginning of Surat al-Kahf by heart will be protected, guarded, and shielded from the trial of the Antichrist, who will appear at the end of time and claim divinity. His trial will be the greatest trial on Earth from the time of Adam's creation until the advent of the Hour, due to the supernatural events that Allah Almighty will allow him to perform to deceive his followers. This is because the beginning of Surat al-Kahf contains wonders and signs that are greater than what the Antichrist will use to deceive the people. Therefore, whoever reflects upon it will not be deceived by the Antichrist. Another version reads: The last ten verses of the Surah from His statement: {Do the disbelievers think that they can take My slaves...}.