The Protection of the Most Holy Theotokos: “Today the Virgin stands in the midst of the Church, and with choirs of Saints she invisibly prays to God for us. Angels and Bishops venerate Her, Apostles and prophets rejoice together, Since for our sake she prays to the Eternal God!”  

Troparion — Tone 4

Today the faithful celebrate the feast with joy / illumined by your coming, O Mother of God. / Beholding your pure image we fervently cry to you: / “Encompass us beneath the precious veil of your protection; / deliver us from every form of evil by entreating Christ, / your Son and our God that He may save our souls.”
https://www.oca.org/saints/lives/2019/10/01/102824-the-protection-of-our-most-holy-lady-the-mother-of-god-and-ever