In Kathleen Warner Slane and M.W. Dickie, "A Knidian Phallic Vase from Corinth," Hesperia 62 (1993) 483-505, I came across a description of an apotropaic mosaic at the entrance of a 3rd century AD villa discovered in 1957 in the village of Skala on the Greek island of Kephallonia: "On the mosaic a young man clutches his throat with both hands and is attacked by four great cats" (p. 495). At the base of the mosaic is the following verse inscription (my rough translation, Greek text from Slane and Dickie):
O Envy, also this image of your destructive mind did a painter draw, which Krateros set in stone, not because you are esteemed among men but because, grudging the wealth of mortals, you donned this form. Stand then face to face before all, stand, wretch, bearing the hateful pattern of the wasting away of envious men.Slane and Dickie say the inscription can be found in Supplementum Epigraphicum Graecum 19.409, and I think it is also in Inscriptiones GraecaeIX 1², 4, 1498 (neither of which I have seen). There is a fuller discussion (unavailable to me) in K.M.D. Dunbabin and M.W. Dickie, "Invidia Rumpantur Pectora: The Iconography of Phthonos-Invidia in Graeco-Roman Art", Jahrbuch für Antike und Christentum 26 (1983) 7-37. There is also a black and white photograph (not a very good one) of the mosaic in Katherine M.D. Dunbabin, Mosaics of the Greek and Roman World(Cambridge: Cambridge University Press, 1999), p. 313, fig. 312. I found a better one at http://www.postmehome.com/pages/romanvilla/photo2.htm:
Ὤ Φθόνε, καὶ σο[ῦ] τήνδε ὀλοῆς φρενὸς εἰκόνα γράψε ζωγράφος, ἣν Κράτερος θήκατο λαινέην, οὐχ ὅτι τειμήεις σὺ μετ᾽ ἀνδράσιν, ἀλλ᾽ ὅτι θνητῶν ὄλβοις βασκ[α]ίνων σχῆμα τόδε ἀμ[φ]εβ[ά]λου.
Ἕστ[αθ]ι δ[ὴ] πάντεσσιν ἐνώπιος, ἕσταθι τλήμων
τηκεδόνος φθονερῶν δεῖγμα φέρων στύγιον.