tasmad indro 'bibhec chatror
tasmat-therefore; indrah-the King of heaven; abibhet-became very fearful; satroh-from the enemy (Namuci); vajrah-the thunderbolt; pratihatah-was unable to hit and returned; yatah-because; kim idam-what is this; daiva-yogena-by some superior force; bhutam-it has happened; loka-vimohanam-so wonderful to the people in general.