Can I use my 96W Macbook Pro charger to charge my iPhone 12 Pro Max?

Question:

Q:

Can I use my 96W Macbook Pro charger to charge my iPhone 12 Pro Max?

Is it safe to use the 2019 16" Macbook Pro (96W) charger to fast charge my iPhone 12 Pro Max? Will it damage the battery in any way?

You can use it. See the following from Charge your iPhone with an iPad or Mac notebook power adapter - Apple Support

You can use Apple USB power adapters for iPad and Mac notebooks to charge iPhone, iPod, Apple Watch, AirPods, and other Apple products.

Also see the following from Fast charge your iPhone - Apple Support

Fast charging works when you use an Apple USB-C to Lightning cable and one of these adapters:

• Apple 18W, 20W,2 29W, 30W, 61W, 87W, or 96W USB-C Power Adapter
• A comparable third-party USB-C power adapter that supports USB Power Delivery (USB-PD)

and see: About Optimized Battery Charging on your iPhone - Apple Support