"O adamantine in soul, how can we rightly praise you?"

St. Eustathios the Great Martyr (source)

  
O adamantine in soul, how can we rightly praise you? For you surpassed nature when you were deprived of your wealth and your children and your spouse, as you cried out with the blessed and ever-memorable voice of Job: "The Lord giveth, the Lord taketh away, may the Lord be glorified." And this is what happened, for you loved God, and fervently desired Him, and again to you was given those whom you loved, who providentially became your fellow athletes, with whom you suffered many tortures and reached your blessed end, as you received them as your fellow intercessors, O Eustathios, steadfast in soul. We entreat you that we be delivered from our offenses.
-Doxastikon of the Aposticha in the Plagal of the Second Tone, by Ephraim Karias

(source)

 

St. Eustathios the Great Martyr with his family (source)

  

Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!