Catechism of the Catholic Church §2792 — excerpt
Finally, if we pray the Our Father sincerely, we leave individualism behind, because the love that we receive frees us from it. the "our" at the beginning of the Lord's Prayer, like the "us" of the last four petitions, excludes no one.
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.