Praying through verses or passages of the Bible is a great way to help you pray according to the will and desires of God. Below is a passage of Scripture and a sample prayer. I would encourage you to pray that prayer, or, even better, read the passage and pray as God leads you.
Text: Revelation 7:9-10
After this, I looked and there was a vast multitude from every nation, tribe, and people, and language, which no one could number, standing before the throne and before the Lamb. They were clothed in white robes with palm branches in their hands. And they cried out in a loud voice: “Salvation belongs to our God, who is seated on the throne, and to the Lamb!” (Christian Standard Bible)
Father, I thank you and praise you for your heart for the nations. Though in the Old Testament you chose a particular people for your purpose, you did not intend for them to be the totality of your people. The earth is yours and everything and everyone in it. You gave us the Messiah of the Jews to be Savior of the world. Father, may your Gospel spread to the nations with the power of your spirit. May our lives and our churches be tools in your hand to make your glory known. May we long to see your people from all time and all places gathered before you with one voice shouting praise to our King. Amen.