Slide Protection is a pass protection scheme where the offensive lineman each block a gap to the same side.
Slide protection is a little like zone blocking for a pass. Each lineman blocks the same direction, left/right or strong/weak, whatever the call. They step that way and block whomever is rushing that way. It simplifies the blocking for the line. Slide protection can be the entire line or just half of it. In both schemes it is very important that the lineman maintain good spacing and do not get too far apart.
From an individual technique perspective, at the same time the lineman is stepping toward the gap he is to block, he will “punch” with his backside hand at any defender over him or shading his backside shoulder. This will help slow down the rush a little to allow the backside defensive lineman to get there. On the second diagram above, you can see the center using this technique.
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