Surah Al-Kahf and Protection From the Dajjal
A Sahih Muslim narration links memorizing the first ten verses of Surah Al-Kahf with protection from the trial of the Dajjal.
What the Quran and Sunnah say
The cited Sahih Muslim narration establishes protection connected to memorizing the first ten verses of Al-Kahf.
How to apply it
Memorize one or two verses daily, then revise the full set every day.
Common misunderstanding
Do not use this hadith as proof for the Friday-light narration; that is a separate report.