youre in luck, becasue drahmin is not synonimus with combos, at any rate, even if somebody did land a combo like that its weak in its nature, I suggest you block the insuing first hit of the combo, and youve got it made.

To master jumping: Tap the up button in the directional pad. Repeat the process until you've got it perfect. J/K

But anyway, it's easy to dodge Drahmin's ground pound. Just jump when he does it. What I do. If you time it right (which is easy since you will always know when he's about to do it) then you will be able to jump, or do a jump kick and kick him in the head. But Drahmin's slow when he does the ground pound. He takes his arm back ready to do it kinda slow, so that will give you the time to jump.