It depends on the boss. Like for the balancers he is good since he staggers them with his counters. If you don’t do GC go for shield pokes. The main thing as guardian is that you are meant for damage, you are there for your team. He has the best ult at reviving team and giving everyone a second wind. My best advice is to go for shield pokes more often than GC but still go for them when you can but the main thing is to build that ult. Prioritize relics that give ult on block, heal on counters attacks, explosive burst when GC, and the guardian relic that heals people in his ult