DU'A AFTER LEAVING THE TOILET
غُفْرَانَكَ
Ghufraanaka
I seek your Forgiveness
Or you can say:
غُفْرَانَكَ الْحَمْدُ لِلَّهِ الَّذِي أَذْهَبَ عَنِّي الْأَذٰى وَعَافَانِي
Ghufranaka Alhamdulillah illadhi adhhaba anni al-adha wa ‘aafaanee
All praise are due to allah who has taken away frome the discomfort and granted me relief. (Related by Anas- Ibn Majah)
(Abu Dawda, Ibn Majah & At-Tirmodhi)