SB 6.11.7

tena deva-gaṇāḥ sarve
 vṛtra-visphoṭanena vai
nipetur mūrcchitā bhūmau
 yathaivāśaninā hatāḥ
Word for word: 
tena — by that; deva-gaṇāḥ — the demigods; sarve — all; vṛtra-visphoṭanena — the tumultuous sound of Vṛtrāsura; vai — indeed; nipetuḥ — fell; mūrcchitāḥ — fainted; bhūmau — on the ground; yathā — just as if; eva — indeed; aśaninā — by a thunderbolt; hatāḥ — struck.
Translation: 
When all the demigods heard Vṛtrāsura’s tumultuous roar, which resembled that of a lion, they fainted and fell to the ground as if struck by thunderbolts.