﴿ وَلَوْ قَٰتَلَكُمُ ٱلَّذِينَ كَفَرُوا۟ لَوَلَّوُا۟ ٱلْأَدْبَٰرَ ثُمَّ لَا يَجِدُونَ وَلِيًّۭا وَلَا نَصِيرًۭا ﴾

“And [now,] if they who are bent on denying the truth should fight against you, they will indeed turn their backs [in flight], and will find none to protect them and none to bring them succour:”

Please check ayah 48:24 for complete tafsir.