durmadā ātatāyinaḥ

tat srutva-hearing that news; eva-indeed; asurah-the demons; sarve-all; asritya-taking shelter of; ausanasam-of Sukracarya; matam-the instruction; devan-the demigods; pratyudyamam-action against; cakruh-performed; durmadah-not very intelligent; atatayinah-equipped with arms for fighting.