In the name of Allah, peace and blessings upon the Messenger of Allah. O Allah, — Mosque Adhkar
بِسْمِ اللَّهِ وَالصَّلَاةُ وَالسَّلَامُ عَلَى رَسُولِ اللَّهِ، اللَّهُمَّ إِنِّي أَسْأَلُكَ مِنْ فَضْلِكَ، اللَّهُمَّ اعْصِمْنِي مِنَ الشَّيْطَانِ الرَّجِيمِ
Transliteration: Bismillaahi was-salaatu was-salaamu 'alaa rasoolillaah, Allaahumma innee as'aluka min fadlik, Allaahumma-'simnee minash-shaytaanir-rajeem
Translation: In the name of Allah, peace and blessings upon the Messenger of Allah. O Allah, I ask You from Your favor. O Allah, protect me from the accursed Satan. (When leaving the mosque)
Reference: Abu Dawud 1:131