churan

How to make the attack Allies in the status effect not target users?

gamingislove

Attack allies will use all allied combatants as enemies.

Can you go into more details about what you want to do? What are 'users' in this case?

churan

This is the combatant who applies this status effect

He's gonna make himself a target, too

gamingislove

Yes, there's no option to prevent that.

An alternative setup would be using the battle AI to handle this, checking if the status effect is applied and using the base attack on defined targets (e.g. allies without the target).
For player combatants, you can set the status effect to use Force AI Controlled to make them AI controlled during the effect.