An A319 AOM indicates the "danger zone" for an engine at idle thrust as an area around the engine with a radius of 7.2ft, and for an engine at TO thrust as an area with a radius of 19.5ft.
For information only, for an A319, nineteen-and-a-half feet, (the danger zone when the engine is at takeoff thrust), is just behind the cockpit. One cannot possibly imagine an engine a such thrust settings during pushback or initial taxi. Seven feet is a few feet in front of the leading edge of the wing where it meets the fuselage - a long way from the nosewheel area.