Say before going to bed and getting up

2.  Narrated Juhaifa: When the Prophet went to bed, he
used to say, "Allhumma bismika ahya wa amut."
And when he got Up in the mornings he used to say,
"Alhamdu lillahi al-ladhi ahyana ba'da ma amatana
wa ilaihin- nushur."
(Sahih Al-Bukhari, Vol. 9, Hadith 491)