May God be gracious to us and bless us and make his face shine on us. Psalm 67:1
This verse is quite similar to the High Priests prayer in Numbers 6:24-25:
The LORD bless you and keep you;
the LORD make his face shine upon you and be gracious to you;
It’s a prayer of blessing. One of our missionary friends used to ask guests if they would pray over their household just before they left. This would certainly be a fitting prayer on such occasion. We also can pray it over a nation because we certainly can live with a touch from Almighty God in this day and age.