Dua Upon Leaving Mosque

بِسْمِ اللّهِ وَالصَّلاَةُ وَالسَّلاَمُ عَلَى رَسُولِ اللّهِ، اَللَّهُـمَّ إِنِّي أَسْأَلُكَ مِنْ فَضْـلِكَ، اَللَّهُـمَّ اعْصِمْنِـي مِنَ الشَّيْـطَانِ الرَّجِـيمِ.

Bismil-lah wassalatu wassalamu AAala rasoolil-lah, allahumma innee as-aluka min fadlik, allahumma iAAsimnee minash-shaytanir-rajeem.

Pronunciation: In the name of Allah, and prayers and peace be upon the Messenger of Allah. O Allah, I ask You from Your favour. O Allah, guard me from the accursed devil.

Reference: Muslim: 1:494, Ibn Majah: 1:129