Deterence

Choose a creature other than you that is within range, any attacks made on that creature has disadvantage

Additionally, when target creature is hit by an attack you can cause the attacker takes 3d6 plus your Intelligence modifier as Force Damage

If you spend a 4th level spell slot: You may choose two creatures instead of one and the damage die from your reaction goes up by another 3d6

"And no; we won't surrender"