Encountering Grover in long range spaces - don't PEEK around the corner.
Good Grover players throw axes preemptively and you can take a lot of damage. Use short sprints between cover. This way it's harder to predict where to aim.
Fuiria's solar blessing stops on allies this means that you want to make sure your not too close because it still does damage avoid the beam and focus cauterize on the target or kill furis to keep her from using it again.