core/homeassistant/components/cast/translations/el.json

{
    "options": {
        "step": {
            "advanced_options": {
                "data": {
                    "ignore_cec": "\u0391\u03b3\u03bd\u03cc\u03b7\u03c3\u03b7 CEC"
                }
            }
        }
    }
}