Prayer for Entering the Mosque

A'udhu billahi al-azim, wa bi wajhihi al-karim, wa sultanihi al-qadim, min ash-shaytan ir-rajim, wa as-salamu 'ala Rasulillah, Allahumma iftah li abwaba rahmatika.

Translation

I seek refuge with Allah, the Almighty, from the accursed Satan, with His Noble Face and His Eternal Sovereignty. Peace and blessings be upon the Messenger of Allah (PBUH). O Allah, open for me the doors of Your mercy. .