A great macro to have is one that alerts other healers in party when you are resing someone.
/ac "raise" <target>
/p casting raise on <target> <se.02>
This way your other healers don't also attempt to raise and are alerted that you are unable to heal for the next 7.5ish seconds.
A big tip for the harder end game stuff. when you raise someone as soon as you finish the skill run from that spot. Most bosses like to throw aoes at targets, if you stay standing there your fellow team mate will be insta killed the moment they res up.