Had the unbelievers fought you they would have turned their backs and not found a protector or helper.
22
Tafseer
'Abdullāh Ibn 'Abbās / Muḥammad al-Fīrūzabādī
تفسير : (and if those who disbelieve) asad, ghatafan along with khaybar (join battle with you they will take to flight) defeated, (and afterward they will find no protecting friend) to prevent you from killing them (nor helper) who can prevent their killing and defeat.
Jalāl al-Dīn al-Maḥallī
تفسير : and if those who disbelieve had fought you, at al-hudaybiyya, they would have turned their backs [to flee] — then they would not have found any protector, to guard them, or helper.