Target Filter probabilities?

I would like to get my mouse TargetFilter to includes these 2 Models:

• 1 Model (ignore model) is located in Workspace
• 1 Model is located in Camera

The i am using a local script in PlayerGui to cast a ray, to make a laser beam and im using mouse.Hit.p, but i want to ignore some parts in the Ignore Model and the parts in the Camera as well. So is there any way i can cast a ray in 1st person mode that goes in 1 Direction (<-- ha ha) with both ignore Model?