His earliest work, in three cantos, is De expeditione Heraclii imperatoris contra Persas, libri tres on Heraclius' campaign against the Persians in 622 (a campaign in which a relic purporting to be the True Cross, which the Persians had captured some years before at Jerusalem, was recovered), seems to be the work of an eyewitness.
This was followed by the Avarica (or Bellum Avaricum), an account of a futile attack on Constantinople by the Avars (626), during the absence of the emperor and his army, said to have been repulsed by the aid of the Virgin Mary; and by the Heraclias (or De extremo Chosroae Persarum regis excidio), a general survey of the exploits of Heraclius both at home and abroad down to the final overthrow of Chosroes in 627.
This account was apparently based on Heraclius' own dispatches from Persia to the citizens of Constantinople and was available for Theophanes the Confessor as a basis for his Chronographia.
Next he wrote In sanctam Jesu Christi, Dei nostri resurrectionem, in which the poet exhorts Flavius Constantinus to follow in the footsteps of his father, Heraclius.
There was also a didactic poem, Hexameron or Cosmologia (also called Opus sex dierum seu Mundi opificium), upon the creation of the world, dedicated to Sergius; De vanitate vitae, a treatise on the vanity of life, after the manner of Ecclesiastes; Contra impium Severum Antiochiae, a controversial composition against Patriarch Severus of Antioch and his Monophysitism; two short poems, including In templum Deiparae Constantinopoli, in Blachernissitum upon the resurrection of Christ and on the recovery of the True Cross.