Agreed, protection is called sunscreen if you don't have a foreskin. I use it regularly, have never had a sun-burned knob. My lower belly groin are have been sun-burned when I did not use sunscreen but my penis and glans did not burn. The skin there seems marginally darker and I'm fair skinned. I get some on those parts without sunscreen and then apply. SBN.
Sunscreen, sunscreen and more sunscreen. I have fair skin and tend to burn easily, so I liberally apply sunscreen everywhere, especially on the genital area. If I'm by the beach or pool for a while, I often use a small towel or something to cover just the penis and balls. That way I don't get tan lines or unfortunate burns.
sunscreen is my best friend whenever I'm in the sun. Even better if you can get a friend to assist in the application.......
The penis is quite a delicate part, so you can never be too careful to make sure it is well protected with a good sunscreen, especially if circumcised like I am.