I'm quite sure that the geese will not eat the frogs. They may be interested in them and even chase them a bit, and I suppose they could injure or kill them, but it seems unlikely. My geese chase the hens out of pure mischief and I've even seen them chase sparrows on occasion... but they are content just to chase.

Im not sure about geese..but I know that my ducks will eat frogs. So, whenever I see a frog near the ducks I move it away quickly before the ducks see it! but, the ones here are small frogs, not big toads!

Ducks are omniverous whereas geese are almost totally herbivorous. They do apparently eat invertibrates such as snails and worms on occasion, but ir is not a major part of their diet compared to ducks. If the geese go after the frogs it will be for sport, not food.