Abu Hurayra said, "In the morning, the Prophet, may Allah bless him and grant him peace, would say, 'O Allah, We enter the morning by You and we enter the evening by You. We live by You and we die by You and to You is gathering.' In the evening, he would say, 'O Allah, we enter the evening by You and we enter the morning by You and we live by You and we die by You and to You is the return.'"
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُعَلَّى، قَالَ: حَدَّثَنَا وُهَيْبٌ، قَالَ: حَدَّثَنَا سُهَيْلُ بْنُ أَبِي صَالِحٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ قَالَ: كَانَ النَّبِيُّ صلى الله عليه وسلم إِذَا أَصْبَحَ قَالَ: اللَّهُمَّ بِكَ أَصْبَحْنَا، وَبِكَ أَمْسَيْنَا، وَبِكَ نَحْيَا، وَبِكَ نَمُوتُ، وَإِلَيْكَ النُّشُورُ، وَإِذَا أَمْسَى قَالَ: اللَّهُمَّ بِكَ أَمْسَيْنَا، وَبِكَ أَصْبَحْنَا، وَبِكَ نَحْيَا، وَبِكَ نَمُوتُ، وَإِلَيْكَ الْمَصِيرُ.
sunnah.com