symbol with X and P together, representing Christ
The Chi Rho symbol
The Chi Rho (☧, English pronunciation /ˈkaɪ ˈroʊ/ KY-ROH; also known as chrismon) is one of the earliest forms of the Christogram, formed by superimposing the first two (capital) letters—chi and rho (ΧΡ)—of the Greek ΧΡΙΣΤΟΣ (rom: Christos) in such a way that the vertical stroke of the rho intersects the center of the chi.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).