Take what attackers say seriously. Hear them out, let them know you have heard them, and then state your position clearly and avoid the temptation to argue. Egotists are often experts and know more than others on the team about a particular subject. This strategy minimizes their tendency to interrupt later in the meeting. But you can capitalize on what they know by asking questions.
Egotists love to show off and have their knowledge appreciated.
If you approach them from this perspective, their abusive attitudes and behaviors can be tempered so you can more effectively use their knowledge and expertise to support your efforts. Sneaks take potshots. They undercut your authority in devious ways by using sarcasm, which is often disguised as a joke. Never ignore the sneak's snide comments. That just gives them power to continue Instead, expose them.