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This is what it says:
resistant
rɪˈzɪstənt/Submit
adjective

1. offering resistance to something or someone.
"some of the old Churches are resistant to change"
synonyms: impervious to, proof against, unaffected by, repellent of; unsusceptible to, immune to, invulnerable to; water-resistant, waterproof, impenetrable; rareimperviable to
"a reinforced PVC membrane which is resistant to water"
opposed to, averse to, hostile to, inimical to, against, anti, unwilling to accept, disinclined to accept, reluctant to accept, unenthusiastic about
"she is very resistant to change"
antonyms:   susceptible to, receptive to

2. denoting starch that is not easily broken down by enzymes within the body and is therefore minimally absorbed during digestion.
"cooked rice, like bread, contains a useful amount of resistant starch, which acts like fibre in the digestive system"