Use this phrase to correct something that you think people might misunderstand:
Don't get me wrong — I'm not saying that I disagree with you at all.
This is useful when you think that the listeners might get angry or offended by something that you said.
You often follow "I'm not saying ___" with another sentence that begins with "I'm just saying ___":
I'm not saying that you're wrong. I'm just saying that you probably should have phrased it more politely.