This leaves the ship two options
The only way to circumvent this involves the fact that the higher the energy and density of the force field the shorter it lasts. So you set the force field to a sufficient strength and set it to work by the strobe method. The shield flicks on and off before in can buckle space. It can do this up to a billion times a second. The less time the shield runs the higher the strength of the shield can be, as long as you can produce the energy to do so.
Shields are just force fields that are bent like a graphed function, a parabolic curve, from each shield generator and which then overlap to form one solid bubble. Energy and Matter impacting on the force field creates a excess of energy as the force fields interatomic cohesion forces interact with the inter atomic forces of matter and energy of the weapon, object or particle. The energy produced feeds itself back to the shield generator; this reduces the capability of the shield generator and reduces the shield strength.
You should never allow two force fields or shields to interact, integrate or come into contact with each other since this is akin to a piece of incredibly dense, hard and energetic matter passing through another piece of incredibly dense, hard and energetic matter. This will cancel out the shield as where the shields intersect the energy will be to great and the strobe effect will not be able to counter act the buckling of space.