I have a display case with my rotation in it on the bathroom wall. It also contains a few silica gel packs to reduce the moisture in it.
My ritual while shaving is to rinse the blade in the sink full of hot water and after my shave running the blade under the hot tap.
I then wipe it on a microfibre cloth (while the blade is still warm), strop it, oil it and hang it on a hook in the bathroom cabinet for about 24 hrs and then put it back in the display case.
So far I've had no rust issues.