Is it OLL edge parity? If so, this is the alg I use:
Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw'
Some time ago I asked for a good OLL parity alg for 4x4x4 and user @Timona (thanks!) gave me this alg: Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw' (see alg in use) As the alg is long, I broke it down into these 3 sections: 1. Rw U2 x Rw U2 Rw U2 2. Rw' U2 Lw U2 Rw' U2 3. Rw U2...
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On 5x5, it depends which edges are flipped, if the middle 3 are the same and the outside two are different, it's this algorithm, but if they are all right except 1 edge piece in the middle, then move 3 layers for all of the wide moves.