I don't think it's Japanese.
It's Slavic something, I looked it up online and found mainly Polish and Czech (religiously-themed) webpages, but when I checked the dictionaries, I couldn't find it. This leads me to believe that it's either a colloquilism or a proper name.
...or maybe not. Cardinal Sodana is the Vatican Secretary of State.
Sorry for the utter randomness, I was typing as I was researching.