Duayein

When Prophet (S.A.W) went to Bed He would Say,
اللهم بسمك اموت واحيا

'Allahumma bismeka amootu wa ahiya'

(O Allah, with Your Name I die and live).

When Prophet (S.A.W) Woke up  He would Say,

الْحَمْدُ للهِ الَّذِي أَحْيَانَا بَعْدَ مَا أَمَاتَنَا وَإِلَيْهِ النُّشُورُ

'Alhamdu lil lahillathi ahyaana baada ma amatana wa ilaihin-nushoor.'

(All thanks and praise to Allah Who has given us life after causing us to die (i.e. sleep), and unto Him is the Resurrection).

Upon Completing Abultion

"If anyone amongst you performs the ablution and upon completing it says,

أَشْهَدُ أَنْ لَا إِلَهَ إلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ، وَأَشْهَدُ أَنَّ مُحَمَّداً عَبْدُهُ وَرَسُولُهُ

'Ashhadu ana la ilaha ilalah wah dawho la sharika lawho wa ashadu ana, Muhammadan abduwho wa rasulhwho.'

(I testify that there is no god but Allah and that Muhammad is the servant of Allah and His Messenger),

the eight gates of Paradise will be opened for him and he may enter by whichever of them he wishes."