Achmaenids vs. Romans

I would think this would be an Atkinsonian wet-dream universe:
AD 2978
The petty conflicts of the early 3rd milennium have long since vanished,
national distinctions virtually eliminated, Kra'vak reduced to slave
labor.
Only one power stands between Rome and galactic domination: the
Persians.
Risen from the ashes of self destrictive zealotry of the Islamic
Federation,
the ancient traditions strnegthened and unified the people. Unbound by
tradition in space, they proved valiant, cunning and inventive. The
fleets
number tens of thousands of ships. A thousand worlds lie in the balance.
To
whom with the galaxy belong?