Okay kiddo, so a cardinal protector is a really important person in the Catholic Church. You know how you have superheroes and they protect people? Well, in the Church, they have something called cardinals who are kind of like superheroes too.
These cardinals are chosen by the Pope (who is like a boss of the Church) to help him lead and make important decisions about the Church. And the cardinal protector is just one of those cardinals.
But, the cardinal protector has a special job. They are responsible for protecting and taking care of something very important - a place or a building called a basilica. A basilica is like a really special Church that has a lot of history and meaning for the Church and the people who go there to worship.
So, the cardinal protector is like the superhero of the basilica. They make sure everything is running smoothly and that the building is kept safe and in good shape so people can come and worship there. They might also try to protect the basilica from any harm or damage that could come to it, like from bad weather or things like that.
In summary, a cardinal protector is a really important person in the Catholic Church who is like a superhero that is responsible for protecting a special Church called a basilica. They make sure everything is running smoothly and that the building is kept safe and in good shape so people can come and worship there.