But of the quartet only Gray got a taste of the Test atmosphere against the Aussies, coming off the bench for the last four minutes in the final clash.
However Robinson insists that the Scots certainly played their part in the 2-1 victory over the Wallabies and believes they, and Scotland, will be better for the experience.
"I think that Richie Gray, Stuart Hogg, Ryan Grant and Sean Maitland handled themselves really well," he said. "In the end Richie got the opportunity and he played really well when he came off the bench.
"I think the Scottish guys were a success on the tour in the way that they played. Not everybody is going to get picked, but what is pleasing is that the guys handled themselves well. It is about the squad being able to perform.
"The next step for them is to kick on now. There is some depth being created in Scotland, which will help them and they have got some good older heads involved that will bring the youngsters down to earth. There is no issue with those guys getting ahead of themselves.
"The beauty of those guys is that being on the international stage didn't faze them - it actually made them play better. That's why they were successful on the Lions tour."