If you pressure Seris into using her escape, turn around and listen for Seris uncloaking. Try getting someone low in the mean time, this will often cause Seris to believe she is safe since you aren't looking at her and will uncloak to heal her team.
If Pip ults on you try to hide on corners or behind objects. If he's not very close to you zigzaggin can help avoid his shots. Otherwise you have to count on your team. If death is inevitable, get as close as possible to make him receive self-damage.