You will need to wrap the hose in tape and then either use a very fine hacksaw blade or a dremel type cut-off tool. Stainless braid is very sharp, so wear thick gloves.
I find that cable cutters (the large ones where the blade overlaps, not snips where they just meet) are ok for cutting the small stuff. Bigger stuff cuts quite well in a chop saw if you tape it and ram the saw down as quickly as possible.