﴿ يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِذَا لَقِيتُمْ فِئَةًۭ فَٱثْبُتُوا۟ وَٱذْكُرُوا۟ ٱللَّهَ كَثِيرًۭا لَّعَلَّكُمْ تُفْلِحُونَ ﴾

“[Hence,] O you who have attained to faith, when you meet a host in battle, be firm, and remember God often; so that you might attain to a happy state!”

Please check ayah 8:46 for complete tafsir.