How to Add AFTER Delete Trigger in My case?
You should take the vbalues of OLD and use them in INSERT command.

Something like this:

CREATE TRIGGER triger_name_after_delete
AFTER DELETE
   ON resident FOR EACH ROW
BEGIN
   -- Insert record into Outpatient table
   INSERT INTO Outpatient (residentID, [rest columns names...] )
   VALUES ( OLD.residentID, OLD.[rest columns names...])
END;