Yuzu has sometimes been claimed to survive 0 F but I think that's only under ideal conditions and for very brief times.
I'm thinking at the least it's going to suffer a bit of damage, although Yuzu is really good at recovering from damage.
From the research I've looked into in the past, 10 F would be a better description for Yuzu's cold hardiness rating. (And even at 10 F it can suffer some light damage, although at 14 or 15 F it is completely unfazed)
US 852, which a hybrid between Changsha mandarin and trifoliate, can survive 0 F, is tolerably edible, although it does still have a little bit of the trifoliate taste.