If you're looking for an item to make it faster or withstand fighting moves, the only two items that fall into that slot are: Choice Scarf (which locks you into the first move you pick, but increases speed by x1.5) and Chople Berry (which halves damage taken from a supereffective fighting move, but it is single use). To the best of my knowledge, choice scarf is the only item that raises speed, and I do not know of any item that reduces fighting damage other than the chople berry.
I guess you could also use a kee berry (single use) to raise your defense one stage, but it only works on physical moves and it is less effective if you're hit by a fighting type move, especially if its a special move like focus blast which won't trigger the kee berry.
Also if you use Choice Scarf, I'd recommend replacing Dragon Dance with another attacking move.
I know, Pokemon is annoying in terms of items. I hope I helped! :)