A number of Sassanid governors attempted to combine their forces to throw back the invaders, but the effort was crippled by the lack of a strong central authority, and the governors were defeated at the Battle of Nihawānd.
Certo número de gobernadores sasánidas intentaron combinar as súas forzas para facer retroceder aos invasores, pero estes esforzos resultaron baldíos debido á falta dunha autoridade central, e os gobernadores foron derrotados na Batalla de Nihawand.