short of fencing it in, or planting more there is not alot you can do. Someone on this thread once suggested topdressing with lime, and that will deter the deer for a few days until the next good rain.

Really though, if this is the first year of the planting, it is not uncommon for the deer to keep it mowed tight. The clover will still establish a strong root system and will be set to grow fast come June next year, assuming its a perenial clover in your mix..

The deer will get to the other stuff as the clover gets down.