For 18650s, the NCR18650GAs are probably the best protected ones.
For the Q8, protected NCR18650GAs will fit and work perfectly fine too. There is negligible perceived difference in output.
The Zanflare F1 fits protected 18650s:
I am not a fan of NCR18650Bs anymore because of the low continuous current rating - I would not use those in a Q8 (protected or not). I only would use them in lights that draw 3A or less max (single cell).