How to beat Noel Kreiss?

So I have reached the battle with Noel and I cannot beat him at all. I have 5 potions and 1 phoenix down and I have the 2 EP required for a Curaga.

My setup is Physical dmg, Magic dmg and a 'Defender' with the lightning physical attack.

What techniques am I missing which is causing me to run out of all my potions and my EP abilities whilst only managing to get him down to about 50% HP.

Does the block timing really make that much difference? Should you block each strike of a combo attack?

I'm feeling quite lost with this battle and frankly, it's putting me off wanting to play any more.