Standing up, while a move action, is not movement, since you don't leave the square you started in. So you can stand up without an acrobatics check.
Note that you can stand followed by a five-foot step in the same turn, which you could not do if standing were considered movement, since you can't take a five-foot step in the same round that you have moved. You can stand and move out of a greased square without making any rolls.
That's RAW. GMs are free to house rule making it more difficult to stand or fight, but as written these things are not restricted by the spell. Keep in mind it is a first level spell.