"Let us hasten to the memory of the Unmercenaries..."

Sts. Kosmas and Damian the Holy Unmercenaries (source)

  
Let us hasten to the memory of the Unmercenaries with a clean heart and a pure conscience, and let us cry out to them: Rejoice, O dyad, the healing of the sick, for you received from God the authority to perform healings.
-Prosomoion from the Aposticha for the Feast of the Holy Unmercenaries Kosmas and Damian

(source)
  

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