The fact remains that Muslims believe that they are the chosen people, and descendants from Abraham.
Their belief has nothing to do with truth or facts. To beat them it is important for us to understand what they believe.
Descendants of Abraham ? Clearly the creator of the universe, YHvH does not choose them ! Descendants of Abraham? YHvH does not think so, He repudiates them ! YHvH states that Isaac is Abraham's only son See Genesis 22:2 22:12 22:16 & Hebrews 11:17 The Name of Elohim is YHvH; He says so ! The Name of His Son is Yah'shua ( YHvH is my Salvation ) Chosen by whom ?
shalom b'shem Yah'shua