To Islam we say:
We are true believers in God.
Like you, we know that Jesus Christ is the promised Messiah who will soon return.
To the radical Islamists we say:
We do repent of our sins as Jesus taught.
We will not convert to Islam as you demand, because we know that Jesus of Nazareth is the Christ, the Son of the Living God, the resurrected Savior, and Redeemer of all mankind.
John 3: 16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.