Why does he get the feeling it's not the part where he goes too far back to the past? It hasn't been that long since he recovered from that but he hasn't even told Rinoa what happened so...

"I'm fine. I made it out." He's trying to be dismissive. He's halfway to placing down a card when it occurs to him that these memories come with sensation. Nida must have felt everything. He shoots Nida an alarmed and wary look. "... are you okay?"

Never mind what happened to himself. He never wanted anyone else to feel that.