That is a lot of ATF - sorry, I guess I should of specified you only needed a little in each cylinder - enough to cover the piston/coat the rings - that is it.
That said, as long as you didn't put the plugs in and then try to turn it over with the starter (which if the engine freed up could hydro lock it) you should be fine. The worst thing you likely have now is just an awful mess to clean up.
I'd clean the extra up and if you have some sort of hand pump or syphon, suck some it out of the cylinders. Then let the rest soak into the piston rings and in a few days, (without the plugs in) see if you can turn it over by hand/work the flywheel back and forth. Once/if you can turn it over by hand (smoothly - no mechanical clunks or feelings indicating physical damage), while still leaving the plugs out, put some rags in around the engine (away from anything moving or directly on the spark plug holes) and turn it over with the starter to blow all the excess ATF out.