question #1 Sahih al-Bukhari 142, Book 4, Hadith 8 : What supplication did the Prophet Muhammad (ﷺ) recite before entering the restroom?

Whenever the Prophet (ﷺ) went to answer the call of nature, he used to say, “Allah-umma inni a`udhu
bika minal khubuthi wal khaba’ith i.e. O Allah, I seek Refuge with You from all offensive and wicked
things (evil deeds and evil spirits).