Greeks (especially Athens who instigated the war) were not only helping the rebellions in Asia Minor but sent forces to try and liberate Egypt from the Persians as well - all failed.
If anything your history is distorted.
Asia Minor was Greek and the Persians had overrun the region. Greeks including the Athenians simply were fighting a defensive war against Persians.
Who can forget:
"the Xanthians of the city of Xanthos (this is Asia Minor) refused to surrender. They gathered their families, wives and children in the acropolis of their city, and set fire on them, and kept fighting against Persians until the last soldier fell on the ground."