For more than twenty - two years , Babak bravely fought the Arab invaders from his remote castle in the mountains of northwestern Iran .
For more than twenty - two years , Babak bravely inflicted heavy casualties on the army of the Abbasid Caliphate .
For more than twenty - two years , Babak bravely fought the Arab invaders from his remote castle in the mountains of northwestern Iran and inflicted heavy casualties on the army of the Abbasid Caliphate .