Surat Al-Kahf and protection from Ad-Dajjal
The Prophet (sal Allahu alaihi wa sallam) said, “Whoever commits to memory the first ten Ayat of the Surat Al-Kahf (18), will be protected from (the trial of) Ad-Dajjal (Antichrist).”
In another narration, “(Whoever commits to memory) the last ten Ayat of Surat Al-Kahf, he will be protected from (the trial of) Ad-Dajjal.”
Ad-Dajjal will appear sometime before Yaum-ul-Qiyamah.
Allah, the Almighty will give him some supernatural powers the manifestation of which will shake the faith of many people. For this reason, this will be a serious trial.
All Prophets warned their people against him. Our Prophet (sal Allahu alaihi wa sallam) also warned us against him and ordered us to guard ourselves from it and strictly advised us to seek Refuge of Allah against it.
This Hadith tells us the way to save ourselves from Ad-Dajjal. The recitation of the first or the last ten Ayat of Surat Al-Kahf is very useful for this purpose.
And Allah knows best!