This is taken from athar from Ibn Abi Hatim, Abu as-Syeikh from Layth Ibn Abi Salim r.a.hu. said;
"It has been conveyed to me that verily these ayaat syifa' (cure) from sihr with the permission of ALLAH ta'ala, recite (those ayaat) onto a container filled with water and pour onto the head of the person afflicted with sihr. Those ayaat are (81-82 surah Yunus), (ayaat 118-122 surah al-A'raf) and (ayat 69 surah Toha)."
There are a lot of ahadith where Rasulullah s.a.w. teaches us do'as/supplication for protection against syaitan...
On ruqyah, there is also a hadith from Bukhari about the story of one sahabi, Abu Sa'id al-Khudri r.a.hu who treated the head of a clan who was bitten by a scorpion, by reciting al-Fatihah. Rasulullah s.a.w. said; "wa maa yudriika annahaa ruqyah" (how do you know that it (surah fatihah) is a ruqyah)