Avoid stacking up in a line as you attack or your team will get speared with a presence shot for 800 piercing damage. Be wary if you see a Lian with Eminence as it will focus on presence spam. Stay behind shields as it cancels on hit effects.
If you're a non-tank that isnt capable of much self- healing do not try to 1v1 lian at mid to short range as she is capable of bursting you down. Instead, use an element of suprise and go behind her when she is distracted.