اَللَّهُمَّ أَنْتَ السَّلَامُ وَمِنْك السَّلَامُ فَحَيِّنَا رَبَّنَا بِالسَّلَامِ

Allaahumma antas salaam, wa minkas salaam, fa-hayyinaa rabbanaa bissalaam.

O, Allah! You are the peace (holy). Peace from you. Therefore, O our Lord! Keep us alive in peace.

Reference: Hasan (Albani). Bayhaqi: 5/73