وَلَوْ قَـٰتَلَكُمُ ٱلَّذِينَ كَفَرُوا۟ لَوَلَّوُا۟ ٱلْأَدْبَـٰرَ ثُمَّ لَا يَجِدُونَ وَلِيًّا وَلَا نَصِيرًا
Wa law qaatalakumul lazeena kafaroo la wallawul adbaara summa laa yajidoona waliyanw-wa laa naseeraa
If the disbelievers had fought against you, they would have taken flight and found no one to protect or support them:
If those who deny had fought you, they would have turned their backs in flight, and then found neither protector nor helper.