Al-Kahf (Arabic: الكهف, lit. 'the Cave') is the 18th chapter (sūrah) of the Qur'an with 110 verses

Reciting Surah Kahf every Friday is a special tradition. It provides spiritual light and protection from one Friday to the next.
'One who memorised the first ten verses of Surah al Kahf will be secure against the Dajjal