Quod Lux Romae - Imperial Anthem of the Roman Empire. 

The Roman Empire never had an anthem that we know of.
Also I wanted to redo the video.
The Light of Rome is from the movie Dragon Blade
Lyrics in Latin
Firme nunc me spondeo,
Fidelis tibi maneo,
Bella priorum cara patria,
Nunc et semper florens gloria,
Pulchras terrae patriae!
Fortes terrae pro homines,
Romae noster aeterne,
Vis cavire domum navium,
Frusta ipsa impetur,
Sunt sine spe!
Domus dulces portula,
Fraudi ob sat,
Tubae militaris vox,
Legiones procat mox!
Et in tota patria,
Cantus victoriae resonat,
Et in tota patria,
Cantus nostrae resonat,
Tempus est in gaudium,
Superbiae Roma aeterna.
Lyrics in English
Firmly I pledge
my loyalty to thee
Land of my Forefathers
forever brimming with glory
A land of beauty
home of the courageous
Our Eternal Rome
the might of enemy ships
Threatens us in vain
it is a hopeless quest
Turn away from deceit
and sweet delusions
For the trumpets of War
will call our Legions soon
And across the fatherland
a victory song will ring
And across the fatherland
our song will resonate
A time of joy and pride
for Eternal Rome.