DUA WHEN ENTERING THE TOILET

بِسْمِ اللهِ اَللّهُمَّ إِنِّيْ أَعُوْذُ بِكَ مِنَ الخبُثِ وَ الخَبَائِثِ

In the name of Allah, O Allah, I seek your protection from male and female devils.
(Bukhari)