Tradition
St. Cyril of Jerusalem
Catechetical Lectures
Book 23 › Section 8
8. Then, after the spiritual sacrifice, the bloodless service, is completed, over that sacrifice of propitiation we entreat God for the common peace of the Churches, for the welfare of the world; for kings; for soldiers and allies; for the sick; for the afflicted; and, in a word, for all who stand in need of succour we all pray and offer this sacrifice.
Source: Catechetical Lectures (New Advent)