kruddho rudra ivāntakam

vrtram-Vrtrasura; abhyadravat-attacked; satrum-the enemy; asura-anika-yuthapaih-by the commanders or captains of the soldiers of the asuras; paryastam-surrounded; ojasa-with great force; rajan-O King; kruddhah-being angry; rudrah-an incarnation of Lord Siva; iva-like; antakam-Antaka, or Yamaraja.