"Come, let us rejoice in spirit at the memorial of the Saints..."

A Menaion Icon, depicting all the Saints and Feasts celebrated throughout the year (source)

  
Come, let us rejoice in spirit at the memorial of the Saints; for see, it has come bringing us gifts of grace in rich abundance; and so with a voice of gladness and a pure conscience let us cry out and say: Hail, company of Prophets, who proclaimed the coming of Christ to the world and foresaw near at hand things far off. Hail, choir of Apostles, who caught the nations in a net, and who are the fishers of mankind. Hail, race of Martyrs, who were gathered from the ends of the into one faith, endured for it fierce torments and finally received the crown of your contest. Hail, swarm of Fathers, who trampled down your own bodies by ascetic struggle, and when you had slain the passions of the flesh you gave wings to your mind with divine love and took flight to heaven, and as you rejoice with the Angels, you enjoy eternal blessings. But, O Prophets, Apostles and Martyrs with Ascetics, insistently implore the one who crowned you that those who celebrate with faith and love your ever-revered memorial may be rescued from enemies visible and invisible.
-Idiomelon from the Litia of the Sunday of All Saints
  
(source)
  

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