How do starcraft ii protoss handle the tactics of riflemen?

Upstairs, it is said that the giant elephant can't beat MM? ... I laughed, and the colossus output should be hidden behind the big army, retreating to the highlands while fighting and so on. If people are strong on the colossus, your XX output will be cool. If you kill XX, the colossus output will be even cooler ... The opponent is 20 MM, and the front of the protoss 10 XX, 1 sentry opens the shield, and the back two colossus will be swept several times. I don't explain the effect of pure speed-up XX on gunners and tanks. As long as XX is near, the tank MM is a joke. In the medium term, there are many colossus of MM, and there are many feedbacks from medical boats and soldiers, so the tank will not die. If the opponent plays the colossus in Viking, he can also play some dragon riding. Basically, nothing will be lost. Just like MC said, how can the protoss beat the Terran? ....