nodecb.js

var request = require('request');
var app = require('express')();
var results;

function logRes(){
  console.log(results);
}

app.get('/storeData', function(req,res){
  readResult(logRes)
});

function readResult(callback){
  request('http://someroute.com/api', function(err, response, body){
    results=body;
    callback();
  });
}