An-Nisa 4:84

Faqatil fee sabeeli Allahi latukallafu illa nafsaka waharridialmu/mineena AAasa Allahu an yakuffa ba/sa allatheenakafaroo wallahu ashaddu ba/san waashaddu tankeela

So fight, [O Muḥammad], in the cause of Allāh; you are not held responsible except for yourself. And encourage the believers [to join you] that perhaps Allāh will restrain the [military] might of those who disbelieve. And Allāh is greater in might and stronger in [exemplary] punishment.

So, fight in the way of Allah. You are not responsible but for yourself, and persuade the believers (to fight in Allah’s way). It is likely that Allah will prevent the mischief of those who disbelieve. Allah is the strongest in power and the mightiest in punishing.