Devil teaching a companion to use ayatul kursi against shayateen

A devil used to visit and steal from baytul maal of muslims. When he was caught for 3rd consecutive night he taught the companion Abu hurayrah to recite ayatul kursi for protection from shayateen. https://sunnah.com/riyadussalihin:1020 My question is how did the devil come to know that a Muslim needs to recite ayatul kursi for protection? Is this report similar to one where ruqyah was recited for scorpion bite? https://sunnah.com/bukhari:5736