Allah has revealed a verse (2:255) which will protect us from shaytaan. It is said  to be the most blessed verse in the Quran. Allah’s Messenger (peace be upon him) said, “If anyone recites in the morning Ha-Mim al-Mu’min to ‘to Him is the final goal, and the Throne Verse, he will be guarded by them till the evening, and if anyone recites them in the evening he will be guarded by them till the morning.”
Al-Tirmidhi – Hadith 2144 

The Benefits of Ayatul Kursi