I couldn't find a cereal fitting this description as all cereal is either wheat, corn, or oat. All three of those are carb-rich grains that lead to sugar.

Protein isn't a common thing in cereals. I switched to oatmeal for a while for the fullness factor (and control over the sugar) and then entirely off of all grains for breakfast.

Even if you do find a relatively healthy cereal, there is still all of the 10+ grams of lactose sugar in the milk on top of it.

Overnight oats like those at katheats.com are really great, easy, filling, and you can add nut butters or anything you like for protein. It's soggy, but adding nuts or a little bit of Cheerios in the morning helps a lot. After fiddling with it I'm sure you could find something to make it exactly what you're looking for.

Special K Protien cereal is good esp with almond milk lots of protien and not high in sugars.