The Persian empire.
No one.
Darius I .
Xerxes
Darius the 1st and his son Xerxes the 1st .
Greece did not conquer Phoenicia. Macedonian king Alexander took it over as part of his conquest of the Persian Empire in 334 BCE.
His ambition was limitless and it was the greatest challenge around. He said it was reparation for the Persian invasion of Greece a hundred and fifty years earlier.
Alexander was king of Macedonia (not Greece) and he conquered the Persian Empire in order to become king of it. The empire stretched from Greece to Egypt and today's Pakistan.
Xerxes was a son of the ruler Darius the First. He tried to conquer Greece again. In 480 BC, the Persian Army set out for Greece. They were also joined by the Persian Navy. I think they lost the war.
The places that are today called: Iran, Iraq, Jordan, Syria, Turkey. The did not manage to conquer Greece.
He conquered Greece, Egypt, Persia, and part of the Indus Valley in India
Alexander's father Philip II of Macedonia established control of mainland Greece and planned to conquer the Persian Empire. He was assassinated before he left to do this, and his son Alexander took over the task.