Allāhumma bika aṣbaḥnā,
wa bika amsaynā,
wa bika naḥyā, wa bika namūt,
wa ilaykan-nushūr.
When you say this in the evening you should say:
Allāhumma bika amsaynā wa bika aṣbaḥnā,
wa bika naḥyā, wa bika namūt,
wa ilaykal-maṣīr
O Allah, by You we enter the morning and by You we enter the evening,
by You we live and by You we die,
and to You is the Final Return.
O Allah, You bring us the end of the day as You bring us its beginning,
You bring us life and you bring us death,
and to You is our fate.
Reference:
Sahih At-Tirmidhi 3/142.'