<quoted text>Oh, Berossus The Pagan? The astrologer? None of whose original writings survive?
Josephus and Eusebius, so beloved of YECs, both cite him as an astrologer and fortune-teller.
And Berossus cites a single battle won. That's a long way from a "conquest".
And that battle was no where near Egypt, much less for control of the country.