Uhhhh....enemy champion? I don't think you would want to give an enemy champion bonus armor and magic resist, unless you know, assisting enemy team hehe :P . Please clarify this, and I hope this doesn't really mean what it says. Thank you!
I think you misunderstood it... You gain X amount of Armor and MR for each nearby enemy champion. So if 5 enemies are around me, i get a larger bonus, if there is 2, i would get a smaller bonus.
Not a typo, It's more of the opposite, I'll give an example.
A enemy Top laner/Adc/sup are all in Mid lane, while they are it adds to your defense since they are enemies that are in range of you.
It's not hinting at giving the enemies the buff, it's hinting at giving YOU the buff when more enemies are near you. 
Ohhh, okay! Thanks for clearing things up :) . I have a B- in English, so I guess that's why my understanding sucks. I'll put that on my tank masteries instead of the tenacity and slow now. Thanks, again!
