I found this list on praying for missions in a previous edition of a HeartCry magazine. It’s been helpful to me, and hopefully it will be to you as well!
How to Pray for Missions
1. That there might be peace throughout the world so that the Gospel might be preached in every nation (1 Timothy 2:1-4), and that doors might be opened to the Gospel throughout the world (Colossians 4:3).
2. That God might send forth laborers to every nation of the earth (Matthew 9:37-38).
3. That God might grant grace to each missionary so that they walk in holiness, love, wisdom, and power and they preach the Gospel correctly (Colossians 4:1-4).
4. That the knowledge of God might cover every land like the waters that cover the sea (Isaiah 11:9)
5. That God might convert men by His sovereign power and for His own glory (Ezekiel 36:22-28)
6. That all men of every nation might joyfully submit to the sovereign will of God (Matthew 6:10)
7. That God’s Name might be great, or, be hallowed among the nations (Malachi 1:11; Matthew 6:9). That all men of every nation might esteem the worth of God above all things.