سُورَةُ الْكَهْف
Transliteration
Suratul-kahf
English meaning
Reciting Surah Al-Kahf on Friday is a sunnah.
When is it recited?
From Thursday evening to Friday evening.
Its virtue
Whoever recites Surah Al-Kahf on Friday will have light shed for him between the two Fridays.
Source
Hakim, Mustadrak II/399