Yasin - every morning
Kursi - after every salat
Mulk - every night
Kahf - every Friday
And whoever cannot memorize or recite shall listen.
Mulk at night - Tirmidhi & Nasa’i
3 Quls before bed - Abu Dawud & Tirmidhi
Kahf on Friday - Sunna al-Daarimi, Haakim, Bayhaqi
Mulk at night protects from the torment of the grave.
The 3 quls will protect one in the night.
Kahf will erase the sins of the past week and protect from Dajjal.