After an overview of the multilingual epigraphy of Daskyleion during the Achaemenid period, this paper focuses on the closing formula shared by the Aramaic KAI 318 and the Old Phrygian B-07 epitaphs, which consists of a warning not to harm the funerary monument. Comparison of the two inscriptions sheds light on the cryptic Old Phrygian B-07, the sole Old Phrygian epitaph known. As a result, the paper provides new Phrygian forms, like the possible first-person singular umno=tan, ‘I adjure you’, and a new occurrence of the Phrygian god Ti-, ‘Zeus’, together with a second possible occurrence of Devos, ‘God’, equated to Bel and Nabu of the Aramaic inscription.