Walljump off of the Upper-Left Namihe and then Spring Ball jump up and out of the Lava. Delay the pause until in position to perform the Spring Ball jump because Lava physics will reduce Samus' horizontal momentum. It may help to also delay the Morph.

Requires:

{
  "notable": "HiJump"
}
{
  "or": [
    "h_lavaProof",
    "canSuitlessLavaDive"
  ]
}
"canSpringwall"
"HiJump"
"canUseEnemies"
{
  "heatFrames": 195
}
{
  "lavaFrames": 180
}