I would remove the eggs if you really want fry. If the parents could defend against predators, you wouldnt have a problem would you?
Just remove the rock and place in a tank or container with the same water as the tank. A gentle airstone as near to but not touching eggs. If possible lean the rock so eggs are vertical so any water bourne dirt doesnt settle on the eggs. You could add a little anti fungal remedy at half dose but I dont bother. If you notice any dead eggs, remove with tweezers to reduce fungus. At 26 degrees Celcius, the eggs will hatch in 3 days and wriggle for another 3 days before they free swim. Start some live baby brine shrimp as soon as you see first ones become free swimming. Theres a heap of info if you google.