Shahrbaraz then became the new shah ( king ) of the Sasanian Empire .
Shahrbaraz then killed Kardarigan , who opposed Shahrbaraz after his usurpation of the Sasanian throne .
Shahrbaraz then became the new shah ( king ) of the Sasanian Empire , and killed Kardarigan , who opposed Shahrbaraz after his usurpation of the Sasanian throne .