According to Hadith, Ayat-al-kursi is the most powerful verse of the Quran that Allah has revealed to seek mercy, protection, guidance, Jannah and much more. Whoever recites Ayat-al-kursi, Satan will never come near him and be protected by a group of angels. If recited thrice, Allah Himself protects the person. When we recite after every salah, Allah will make our hearts thankful and full of His blessings. It’s a source of light in the darkness of the grave. Recitation after leaving home will keep you in the protection of angels. It’s a source of acceptance of Dua and makes you calm in fear.
This ayah has the beautiful truth of Allah’s supremacy in a majestic way.