Abu Umaamah (RA) narrated that:
The Prophet (صلى الله عليه وسلم) said:
"Whoever reads "Ayatul-Kursi" [Qur'an 2:255], after every obligatory prayer, nothing prevents him from entering Paradise except death (i.e. that he is still alive)."
(An-Nasaa'ee, Ibn Hibbaan – Sahih)