I suppose it might depend on the kind of lily seed it is, but in general, even lily seeds of lilies that don't tolerate frost very well will still be fine as seed, and even if that seed has imbibed water. This is assuming your fridge was only about 28°F. More cold hardy lilies will survive respectively lower temperatures. Imbibed martagon seed will easily survive 20°F.
Your seeds must be delayed epigeal germinating?
