Catechism of the Catholic Church §2647 — excerpt
Prayer of intercession consists in asking on behalf of another. It knows no boundaries and extends to one's enemies.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.