Abū Sa'id reported the Prophet as saying, “If anyone recites sūra al-Kahf (Qur’ān, 18) on Friday, light will shine brightly for him till the next Friday.”

Baihaqī transmitted it in [Kitāb] al-Da‘awāt al-kabir.

Mishkat al-Masabih 2175

https://sunnah.com/mishkat:2175 ‏

Abu Darda' reported Allah's Apostle (ﷺ) as saying: If anyone learns by heart the first ten verses of the Surah al-Kahf, he will be protected from the Dajjal.

Sahih Muslim 809a

https://sunnah.com/muslim:809a

(Antichrist).