Surah Al-Anfal 8:45

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِذَا لَقِيتُمْ فِئَةً فَٱثْبُتُوا۟ وَٱذْكُرُوا۟ ٱللَّهَ كَثِيرًا لَّعَلَّكُمْ تُفْلِحُونَ

O you who have believed, when you encounter a company [from the enemy forces], stand firm and remember Allāh much that you may be successful.

Translation: Saheeh International

Tafsir

O you who believe when you meet a host a group of disbelievers then stand firm to fight them and do not flee in retreat and remember God much call upon Him for victory that you may succeed that you may triumph.

Excerpt from Tafsir al-Jalalayn, commentary on 8:45, via Quran.com. The reader has the full commentary and 9 more tafsirs.