Police say the woman, aged in her 60s, suffered non-life threatening injuries after a 67-year-old man poured an accelerant next to her and lit a fire at a home in Cairns around 6.30pm on Sunday.
The woman was taken to Cairns hospital for treatment while the man has been charged with attempting to maim and endangering property by fire.
He will face Cairns Magistrates Court on Monday.
The pair are known to each other.
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