The narrative begins with young men seeking refuge in a cave to protect their faith. Their prayer is a cornerstone of this Surah:
Here, note: Allah does not say "most in deed" (aktharu ‘amalan). He says "best in deed" (aḥsanu ‘amalan). A deed is considered "best" when it is:
Surah Al-Kahf (The Cave) is the 18th chapter of the Quran, and its first ten verses are famously recited for spiritual protection. Verses 6 through 10 transition from a message of consolation for the Prophet Muhammad (ﷺ) to the beginning of the story of the "People of the Cave".