The Dua to be recited upon leaving the mosque is one of the most powerful duas for asking Allah's blessings. Reciting dua upon leaving the mosque is part of the Sunnah of Prophet Muhammad( ﷺ ), and it has been heavily reported in the various Hadith books since many companions of the Prophet Muhammad( ﷺ ) saw him reciting this dua.
The dua is a beautiful way of asking Allah (سُبْحَانَهُ وَتَعَالَى) for His limitless bounties (Sunan an-Nasa'i 729). The same has been reported by Abu Usaid al-Ansari (رَضِيَ ٱللَّٰهُ عَنْهُ) in (Sunan Abi Dawud 465) and (Sahih Muslim 713 a). The Dua upon leaving the mosque was also mentioned in a narration by Abu Humaid As-Sa'idi (رَضِيَ ٱللَّٰهُ عَنْهُ) in (Sunan Ibn Majah 772). One can gauge the significance of the dua from these numerous ahadith narrations.
Prayer Duas
Bismillaahi wassalaatu wassalaamu 'alaa Rasoolillaahi, Allaahumma 'innee 'as'aluka min fadhlika, Allaahumma'simnee minash-Shaytaanir-rajeem.
In the Name of Allah, and peace and blessings be upon the Messenger of Allah. O Allah, I ask for Your favor, O Allah, protect me from Satan the outcast.
One should recite the dua upon leaving the mosque while putting their left foot outside the mosque first. The dua should be recited with the utmost sincerity and hope of being accepted by Allah (سُبْحَانَهُ وَتَعَالَى) and being granted the blessings mentioned in the dua.
Reciting the dua upon leaving the mosque is a very simple yet effective way of gaining the blessings of Allah (سُبْحَانَهُ وَتَعَالَى). It is a powerful way of increasing one's good deeds. The biggest benefit of the dua upon leaving the mosque is the limitless bounties that the Almighty will shower upon the reciter, as mentioned in multiple Hadith. One gains prosperity and sustenance from the Almighty by reciting this dua.