Start with this Du'a
Leaving the bathroom
غُفْرَانَكَ
Ghufranak
“Your forgiveness, O Allah.”
Sunan Abi Dawud 30 (sahih)
Find your dua
Duas for leaving the bathroom.
Leave asking for Allah's forgiveness
On leaving the place of relieving himself, the Prophet ﷺ would ask Allah (SWT) for His forgiveness with a single word.
1 sourced Du'a Arabic, transliteration, meaning, and source