I use this, works very well.
RPE2-4 → Stryd zone 1
RPE6 → Stryd zone 2
RPE8 → Stryd zone 3
RPE9 → Stryd zone 4
RPE10 → Stryd zone 5
The description of the workout (mostly) tells you what the matching zone is anyway. If it says you have to do VO2max intervals…you run the intervals in the VO2max power zone. If it’s 20 mins threshold…etc.
This is way easier than running with pace, because the Stryd zones automatically update with your CP, so you don’t need to recalculate via pace tables and what not.
See also https://support.trainerroad.com/hc/en-us/articles/360021324932-RPE-Key-Explained