Allahumma ma amsa bee min niAAmatin, aw bi-ahadin min khalqika, faminka wahdaka la shareeka lak, falakal-hamdu walakash-shukr.

O Allah, what blessing I or any of Your creation have reached the evening upon is from You alone, without partner. So for You is all praise and unto You all thanks

Whoever recites this in the morning, has completed his obligation to thank Allah for that day; and whoever says it in the evening, has completed his obligation for that night.