σταυροφύλαξ

From LSJ

τέλος δεδωκώς Xθύλου, σoι χάριν φέρω → having given the end of Cthulhu, I confer a favor on you

Source

Greek (Liddell-Scott)

σταυροφύλαξ: [ῠ], -ᾰκος, ὁ, ὁ φυλάττων τὸν σταυρόν, Ἐκκλ.