That's ok with me.

هذا مناسب لي.

I don't agree with you.

انا لا اتوافق معك.

That's my opinion.

هذا رأيي.

That is not so.

انه ليس كذلك.

I really don't care.

انا حقيقة لا اهتم.

That's a good point.

هذه وجهة نظر جيدة.

That's just what I was thinking.

هذا بالضبط الذي كنت افكر به.

I agree with you entirely.

انا اتفق معك كليا.

On the contrary.

على العكس تماما.

That's not the same thing at all.

انه ليس نفس الشيء على الاطلاق.

I Take issue with you on that.

سوف اخذ قرار معك بهذا