Congrats on the eggs. I've never kept any species of Geo. but I know that some will take the fry into their mouth once they hatch (I don't think this species does, but im not 100%).
If this is their first batch though, I wouldn't be suprised if they eat the eggs/fry, but you may get lucky and they get it right first time.
If the eggs hatch and the fry become free swimming you can start feeding them BBS (Baby Brine Shrimp) and really fine crushed flake food, atleast 3 times a day. Keep your water clean and in top condition, I'd recommended 10-20% changes every 2-3 days, remember to de-chlorinate and get the temperatures somewhere around the same level.
Are there any other fish in the tank? If you have any Catfish / Plecs you may want to consider moving them to another tank, as they will eat eggs.
Hope that helps!