The much smaller ships of the Athenian navy repeatedly smashed into the Persian warships. During the battle of Salamis. Xerxes, sitting upon a golden throne placed on a cliff high above the shore overlooking the battle, saw his navy completely destroyed.
We'll see about that!!!
Xerxes retreated with his remaining army. The Athenians and their allies defeated Xerxes' army for the last time at the Battle of Plataea in 479 B.C.E.
They were right.
Xerxes returned to Persia, defeated, and the Persian Empire never again invaded Greece.