This text comes from Mediaeval Hymns and Sequences, edited by John Mason Neale, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
As the circling year rolls on
O'er our northern region,
Comes the day that gave the crown
To the Theban Legion:
Equinoctial was that day,
As the world believed it;
Everlasting was its ray,
As that band received it.
They had light that knew no end,
Chiefs of ancient story,
That the sun illumined not,
But diviner glory;
Day of calm serenity,
By no twilight followed—
Day when age was changed to youth,
Death in victory swallowed.
There, Mauritius, spite his name,
Shines in heavenly whiteness:
Ethiopian Candidus
Puts on candid brightness:
Exuperius o'er his foes
There superior standeth;
Victor, vanquished though by death,
With the victors bandeth;
Innocentius meetly falls,
Innocence defending:
And Vitalis for his meed
Hath the life unending.
Six the chiefs that led the war,
Thousands six they guided;
For the truth they stood in fight,
Careless what betided:
Though their necks endured the sword,
They, the gallant-hearted,
From their Head—their Head and ours—
Never could be parted.
Pray, ye valiant six, that we
Still may bid defiance,
So we gain the six-stepped Throne,
To the twice six lions:
That the six adversities
May beset us never,
Pray, ye glorious ones, who now
Wear the Crown for ever!