Null some Tile Data (192dd9)

Loop backward from 0x801937d3 to 0x80192dd8 through all panels from the targetable grid, setting all the AoE flags to 0x00

00179400: 340301ff ori r3,r0,0x01ff         |r3 = 0x1ff
00179404: 3c028019 lui r2,0x8019            |r2 = 0x80190000
00179408: 244237d3 addiu r2,r2,0x37d3       |r2 = 0x801937d3 Last panel data pointer in targetable grid
0017940c: a0400001 sb r0,0x0001(r2)         @LOOP Store 0x00 at panel 0x01 (targeted flag/green panel) 
00179410: 2463ffff addiu r3,r3,-0x0001           |Counter -1
00179414: 0461fffd bgez r3,0x0017940c       Λ Loop while r3 > 0x00
00179418: 2442fffb addiu r2,r2,0xfffb            |r2 = Panel data pointer offset (0x05 is the size of panel data)
0017941c: 03e00008 jr r31                   END
00179420: 00000000 nop

Return locations

Battle.bin
00178aec: 0017813c_-_00178ca0
0017954c: Calculate_Tiles_Hit_by_Ability  
0017d838: Select_Random_Tile_For_Random_Fire_Abilities