Final answer:
The passage depicts Grendel's agonizing defeat at the hands of the strongest man, causing terror among the Danes with his dreadful sounds.
Step-by-step explanation:
The passage describes a moment of intense terror and action in which the Danes are frightened by the horrifying sounds produced by Grendel, an enemy of the Almighty. These sounds are characterized as 'terrible screams' and 'horrible shrieks of pain and defeat,' which are emitted as Grendel is defeated by the strongest man on Earth. This vivid description engages the reader in a powerful scene from an epic tale, where the hero triumphs over a monstrous adversary.