Spike Defence

Spike Defence is a gem effect in Xenoblade Chronicles and Future Connected. It reduces the amount of  taken.

Overview
Spikes are generally very annoying, and reducing damage taken from them helps a great deal in terms of dealing with them if "use every 15 seconds" is not viable. Unfortunately, it takes at least two gems to get 100% protection, which can be limiting compared to most other protective gems (e.g. debuff resistances).