as the others have said, if it’s a straight bit you’ll want to use a down cut spiral. for a v-bit the options are more limited. Traditionally I’ll mask over the area to be cut with painters tape before I cut with anything other than a down cut bit on veneered materials. it won’t stop tearout but has reduced it quite a bit in my experience. I use the same technique when cross-grain cutting plywood on the table saw and it helps a ton, even with a zero clearance insert.