Final answer:
Polyphemus's fellow cyclopes ignore his pleas for help, thinking he is joking since Odysseus tricked Polyphemus into believing his name was "Nobody."
Step-by-step explanation:
When Polyphemus's fellow cyclopes come to his aid, they do not help him find Odysseus and his men, nor do they attack them or pray to the gods on his behalf. Instead, they ignore him, as they believe he is joking or overreacting. This is because Odysseus had cleverly told Polyphemus that his name was "Nobody," so when Polyphemus called out for help, he exclaimed that "Nobody" was hurting him, leading the other cyclopes to think that he was not in any real trouble.