According to an article on Politis news, anyone who wants to have their sushi food in the shadow of the nuclear and natural disasters of its originating country, should feel safe to do so cause only the recipe and none of the ingredients are Japanese.
Japan
Cyprus not in danger from explosions in Japanese nuclear reactors
According to professor of nuclear physics at the University of Cyprus Charalambos Tsertos there is no risk to the area of Cyprus and the Mediterranean in general