What are the most prominent weaknesses in Christianity, and what are the best methods for debating Christians to invite them to Islam?

A person should not engage in dialogue with Christians unless they are well-fortified with religious knowledge. Distorted Christianity has no valid proof, and dialogue with them is based on several points: 1. The provenance of the Gospels: They were written after the ascension of Jesus (peace be upon him), and there is no proof that they are the revealed Gospel. 2. The contradictions and apparent errors in the Gospels: This definitively shows that they are not from God. Al-Hindi has shown 125 discrepancies, 110 errors, and 65 distortions. 3. Attributing grave sins and vices to the prophets of God in their holy book. 4. Their book's prophecy of our Prophet Muhammad (peace be upon him), despite the distortion. 5. The contradiction and confusion regarding the issues of the Trinity and the Crucifixion in the Gospels. 6. The history of Christian councils and how some contradicted others, which reveals that the selection of the four Gospels and the affirmation of Christ's divinity were based on Roman approval.

It is recommended to read books such as: Izhar al-Haqq (The Demonstration of Truth) by Al-Hindi, Al-Yahudiyyah wal-Nasraniyyah (Judaism and Christianity) by Ahmad Shalaby, Muhadarat fi al-Nasraniyyah (Lectures on Christianity) by Muhammad Abu Zahrah, and Shahadat al-Injil ala anna Isa Abdullah wa Rasooluh (The Gospel's Testimony that Jesus is a Servant of Allah and His Messenger) by Abdurrahman Abdul Khaliq.