Thanks for the advice! If we find away to temporary shield it, is there something I can do to help it come back? Or is it likely it’s a lost cause?

Do you think you could replace it with a few stacked bricks or pavers, maybe with a pot or planter on top? I'm sure the dogs will be more than happy with the replacement, and the planter should be high enough to escape the "stream".

Once the shrubs are no longer subject to the harsh chemicals they should recover from the base.

Thanks Everyone for your help! I have heard to cut the branches down to the base and water like crazy! Is this necessary or just water water water and protect the plant?

What is now brown won't magically turn green. It doesn't happen that way :-) You need to remove all browned stems at the base. Watering only helps immediately after the plant has been peed on.......it dilutes the nitrogen in the urine so that it does not burn the plants. Waiting more than a couple of hours before doing so will have no effect.

If you can't stand around all day with a hose in your hand (and who can?), then you need to find another way of protecting this plant. Or it will just happen again.