The Rákshas host when Rávaṇ fell Sent forth a wild terrific yell, Then turned and fled, all hope resigned, Through Lanká’s gates, nor looked behind. His voice each joyous Vánar raised, And Ráma, conquering Ráma, praised.

In plain words: When Ravana falls, his Rakshasa (demon) army screams, gives up hope, and runs back through Lanka's gates. The monkey army shouts with joy and praises the victorious Rama.